- A 22-year-old male presented with a gradually increasing scalp swelling and headaches for 1 year, as well as severe abdominal pain with vomiting during exertion for 8 months. Imaging showed a heterogeneous enhancing mass lesion in the posterior mediastinum with calvarial, bony, and lung metastases.
- Differential diagnoses included paraganglioma and ganglioneuroblastoma. On review of imaging findings such as the location, characteristics of the mass, and presence of metastases, paraganglioma was considered more likely.
- Biopsy was pending to confirm the diagnosis of paraganglioma.
The document discusses primary retroperitoneal neoplasms. It notes that 70-80% of primary retroperitoneal neoplasms are malignant in nature. The retroperitoneum contains mesodermal neoplasms, neurogenic tumors, germ cell and sex cord tumors, and lymphoid neoplasms. The most common primary retroperitoneal sarcomas are liposarcoma, leiomyosarcoma, and malignant fibrous histiocytoma. Neurogenic tumors such as schwannomas and neurofibromas are usually benign and occur in a younger age group. Teratomas are germ cell tumors that may contain fat, calcium, or sebum levels on imaging.
This document discusses various imaging modalities used to evaluate renal masses, including plain radiography, intravenous urography, ultrasound, computed tomography, magnetic resonance imaging, and renal arteriography. For each modality, it describes their utility in detecting and characterizing renal masses and differentiating renal cell carcinoma from other lesions. It also provides examples of imaging findings for various renal pathologies such as abscesses, cysts, angiomyolipomas, and others.
Presentation1, radiological imaging of gastro intestinal stromal tumour(gist).Abdellah Nazeer
This document summarizes radiological imaging of gastrointestinal stromal tumors (GISTs). It describes GISTs as the most common mesenchymal tumors of the GI tract, occurring most often in older adults. Imaging findings are discussed for various modalities including CT, MRI, US, and PET. Characteristic features include soft tissue masses arising from the GI tract wall. Larger tumors may show necrosis, hemorrhage, or cystic changes. Imaging can also detect metastatic lesions or tumor response to chemotherapy.
Presentation1.pptx, radiological imaging of spinal cord tumour.Abdellah Nazeer
This document discusses the radiological imaging and classification of spinal cord tumors. It describes how spinal cord tumors are classified as extra-dural, intra-dural extra-medullary, or intra-medullary. Common benign extra-dural tumors discussed include hemangioma, osteoid osteoma, osteochondroma, eosinophilic granuloma, and epidural lipomatosis. Imaging findings for diagnosing these tumors with x-ray, CT, and MRI are provided. Malignant primary tumors of the spine discussed include chordoma, lymphoma, osteosarcoma, and chondrosarcoma. Metastatic tumors to the spine are also mentioned.
Presentation1.pptx, radiological imaging of prostatic diseasesAbdellah Nazeer
This document discusses radiological imaging of prostatic diseases. It begins with an overview of prostate anatomy and zones. It then discusses various imaging modalities used to evaluate the prostate, including MRI, ultrasound, CT, and bone scans. Specific applications are covered such as imaging characteristics of prostate cancer, benign prostatic hypertrophy, prostatitis, and abscesses. Imaging findings of different prostate cancer stages are also reviewed. In summary, the document provides a comprehensive overview of radiological imaging techniques and findings for evaluating diseases of the prostate gland.
Presentation1.pptx, radiological imaging of cerebral venous thrombosis.Abdellah Nazeer
This document provides an anatomical review of the cerebral venous system and discusses radiological imaging techniques for diagnosing cerebral venous thrombosis (CVT). It describes the normal anatomy of cerebral veins and venous sinuses that drain blood from the brain. Computed tomography and magnetic resonance imaging are effective noninvasive methods for identifying CVT. Direct signs on imaging include visualizing thrombus as hyperdense on CT or hyperintense on MRI. Indirect signs include edema, infarction, hemorrhage, and collateral vessel formation caused by venous outflow obstruction from thrombus.
This document discusses squamous cell carcinoma of the lung. Key points include:
- Squamous cell carcinoma accounts for 30-35% of lung cancers and is strongly associated with heavy smoking. It often presents as a central mass that obstructs bronchi.
- Pathology shows tumors that are white in color and invade the lung parenchyma and chest wall. Larger tumors develop necrosis.
- Radiographic features include collapsed lung segments, cavitary lesions, and pleural effusions. Endobronchial growth patterns are common.
The spleen is located in the left upper quadrant of the abdomen. It filters blood and fights infections. The spleen develops from embryonic tissue and is supplied by the splenic artery and drained by the splenic vein. It can vary in size and shape. Accessory spleens are common. Injuries from trauma are most often seen in the spleen. Conditions like infections, cancers, blood disorders can cause abnormalities. Imaging with ultrasound, CT scan, MRI and nuclear medicine scans are used to evaluate the spleen.
The document discusses primary retroperitoneal neoplasms. It notes that 70-80% of primary retroperitoneal neoplasms are malignant in nature. The retroperitoneum contains mesodermal neoplasms, neurogenic tumors, germ cell and sex cord tumors, and lymphoid neoplasms. The most common primary retroperitoneal sarcomas are liposarcoma, leiomyosarcoma, and malignant fibrous histiocytoma. Neurogenic tumors such as schwannomas and neurofibromas are usually benign and occur in a younger age group. Teratomas are germ cell tumors that may contain fat, calcium, or sebum levels on imaging.
This document discusses various imaging modalities used to evaluate renal masses, including plain radiography, intravenous urography, ultrasound, computed tomography, magnetic resonance imaging, and renal arteriography. For each modality, it describes their utility in detecting and characterizing renal masses and differentiating renal cell carcinoma from other lesions. It also provides examples of imaging findings for various renal pathologies such as abscesses, cysts, angiomyolipomas, and others.
Presentation1, radiological imaging of gastro intestinal stromal tumour(gist).Abdellah Nazeer
This document summarizes radiological imaging of gastrointestinal stromal tumors (GISTs). It describes GISTs as the most common mesenchymal tumors of the GI tract, occurring most often in older adults. Imaging findings are discussed for various modalities including CT, MRI, US, and PET. Characteristic features include soft tissue masses arising from the GI tract wall. Larger tumors may show necrosis, hemorrhage, or cystic changes. Imaging can also detect metastatic lesions or tumor response to chemotherapy.
Presentation1.pptx, radiological imaging of spinal cord tumour.Abdellah Nazeer
This document discusses the radiological imaging and classification of spinal cord tumors. It describes how spinal cord tumors are classified as extra-dural, intra-dural extra-medullary, or intra-medullary. Common benign extra-dural tumors discussed include hemangioma, osteoid osteoma, osteochondroma, eosinophilic granuloma, and epidural lipomatosis. Imaging findings for diagnosing these tumors with x-ray, CT, and MRI are provided. Malignant primary tumors of the spine discussed include chordoma, lymphoma, osteosarcoma, and chondrosarcoma. Metastatic tumors to the spine are also mentioned.
Presentation1.pptx, radiological imaging of prostatic diseasesAbdellah Nazeer
This document discusses radiological imaging of prostatic diseases. It begins with an overview of prostate anatomy and zones. It then discusses various imaging modalities used to evaluate the prostate, including MRI, ultrasound, CT, and bone scans. Specific applications are covered such as imaging characteristics of prostate cancer, benign prostatic hypertrophy, prostatitis, and abscesses. Imaging findings of different prostate cancer stages are also reviewed. In summary, the document provides a comprehensive overview of radiological imaging techniques and findings for evaluating diseases of the prostate gland.
Presentation1.pptx, radiological imaging of cerebral venous thrombosis.Abdellah Nazeer
This document provides an anatomical review of the cerebral venous system and discusses radiological imaging techniques for diagnosing cerebral venous thrombosis (CVT). It describes the normal anatomy of cerebral veins and venous sinuses that drain blood from the brain. Computed tomography and magnetic resonance imaging are effective noninvasive methods for identifying CVT. Direct signs on imaging include visualizing thrombus as hyperdense on CT or hyperintense on MRI. Indirect signs include edema, infarction, hemorrhage, and collateral vessel formation caused by venous outflow obstruction from thrombus.
This document discusses squamous cell carcinoma of the lung. Key points include:
- Squamous cell carcinoma accounts for 30-35% of lung cancers and is strongly associated with heavy smoking. It often presents as a central mass that obstructs bronchi.
- Pathology shows tumors that are white in color and invade the lung parenchyma and chest wall. Larger tumors develop necrosis.
- Radiographic features include collapsed lung segments, cavitary lesions, and pleural effusions. Endobronchial growth patterns are common.
The spleen is located in the left upper quadrant of the abdomen. It filters blood and fights infections. The spleen develops from embryonic tissue and is supplied by the splenic artery and drained by the splenic vein. It can vary in size and shape. Accessory spleens are common. Injuries from trauma are most often seen in the spleen. Conditions like infections, cancers, blood disorders can cause abnormalities. Imaging with ultrasound, CT scan, MRI and nuclear medicine scans are used to evaluate the spleen.
The document discusses approaches to diagnosing benign retroperitoneal masses, noting that primary retroperitoneal neoplasms make up 0.1-0.2% of all malignancies and can be either benign or malignant. It describes methods for determining if a mass is retroperitoneal versus intra-abdominal, identifying its organ of origin, and recognizing characteristics like fat, cysts, necrosis and vascularity that provide diagnostic clues. Learning objectives cover evaluating tumor location, organ of origin, and specific imaging findings for retroperitoneal tumors.
The document discusses the anatomy and divisions of the mediastinum. It is divided into superior and inferior mediastinum by an imaginary line passing through the sternal angle anteriorly and lower border of the 4th thoracic vertebra posteriorly. The inferior mediastinum is further divided into anterior, middle and posterior mediastinum. Each compartment contains different structures like blood vessels, nerves and lymph nodes. Common tumors in different mediastinal compartments are also mentioned. Radiological anatomy and signs to locate mediastinal masses are described along with epidemiology of mediastinal tumors.
Radiology Spotters collection by Dr Pradeep. Nice collection Radiology spotters mixed collection ppt made by or collected by Dr. Pradeep, this is a collection of confusing spotter and very important spotter commonly asked in exams, our references is radiopaedia, learning radiology and Aunt Minnie.. Thanks
The document discusses various central nervous system infections, how they can be classified, their routes of entry and imaging appearances. It covers congenital infections including TORCH infections, acquired pyogenic infections such as meningitis, abscesses and ventriculitis. It also discusses viral, parasitic and fungal infections of the CNS. For each type of infection, the causative pathogens, locations, presentations and characteristic imaging findings are outlined.
Presentation1.pptx, radiological imaging of skeletal dysplasiaAbdellah Nazeer
This document provides radiological images and descriptions of several skeletal dysplasias. It discusses conditions such as cleidocranial dysplasia, which can cause respiratory distress in newborns. Other conditions summarized include osteopoikilosis, mucopolysaccharidoses, multiple epiphyseal dysplasia, metaphyseal dysplasia, spondyloepiphyseal dysplasia, chondroectodermal dysplasia, achondroplasia, fibrous dysplasia, and dysplasia epiphysealis hemimelica. For each condition, the document highlights features visible in imaging and clinical symptoms.
Renal tuberculosis can present in various ways on imaging. Early manifestations include papillary necrosis and focal cortical lesions on ultrasound. As the disease progresses, it can cause multifocal strictures, hydronephrosis, and mural thickening on CT. End-stage disease results in very thin parenchyma resembling multiple thin-walled cysts with amorphous calcification. MRI can detect small caseating or non-caseating granulomas. Treatment involves multi-drug therapy while nephrectomy or drainage procedures may be needed in severe cases. The document discusses renal TB imaging findings on various modalities and differential diagnoses.
Imaging of spinal cord acute myelopathiesNavni Garg
This presentation provides a comprehensive review of imaging of causes of acute myelopathies and a systemic approach for narrowing down the differentials
Radiological imaging of mediastinal massesPankaj Kaira
1. CT is the most important tool for evaluating mediastinal masses and characterizing their nature and extent.
2. Thymomas are the most common primary mediastinal neoplasm, typically occurring in patients over 40 and appearing on CT as well-defined solid masses in the anterior mediastinum that can demonstrate calcification.
3. CT is useful for staging thymomas and identifying features like invasion of surrounding tissues or distant metastases that indicate more advanced disease.
This document contains 23 cases of gastrointestinal and hepatobiliary findings from imaging studies. Each case includes a description of findings and differential diagnoses. The cases cover a wide range of conditions affecting the esophagus, stomach, small bowel, colon, liver and bile ducts.
1. The document describes various genitourinary findings on imaging studies including CT and MRI scans.
2. Key findings mentioned include unilateral renal agenesis, ipsilateral seminal vesicle cyst, and ejaculatory duct obstruction consistent with Zinner syndrome, thick-walled urinary bladder with wall calcifications seen in schistosomiasis, and a T-shaped copper IUD seen within the urinary bladder.
3. Imaging findings are provided to help diagnose and characterize conditions involving the kidneys, urinary tract, prostate, testes and female pelvic organs.
This document discusses cystic pancreatic tumours, focusing on intraductal papillary mucinous neoplasms (IPMN). IPMNs are rare cystic tumours arising from the pancreatic duct epithelium that cause duct dilation and mucin secretion. On imaging, main duct IPMN displays diffuse or segmental pancreatic duct dilation filled with mucin, while branch duct IPMN shows single or multiple dilated side branches. Mural nodules or solid components indicate higher malignancy risk. Surgical resection is recommended for main duct IPMN due to high malignancy risk, while branch duct IPMN may be surveilled if small with no malignant features. Differential diagnosis includes serous cystadenoma, mucinous cystic ne
Radiology plays an important role in evaluating gastrointestinal lymphoma. Primary gastrointestinal lymphoma arises in the lymphatic tissue of the bowel rather than lymph nodes. Common sites of involvement include the stomach, small bowel, and colon. On imaging, gastrointestinal lymphoma can appear as thickened folds, masses, strictures, or diffuse bowel wall thickening. Staging involves assessing for involvement of lymph nodes, adjacent organs, or distant metastases. Radiology is useful for diagnosis, evaluating extent of disease, and monitoring treatment response in gastrointestinal lymphoma.
Presentation1, radiological imaging of endometrial carcinoma.Abdellah Nazeer
MRI is a valuable tool for assessing endometrial cancer by depicting tumor size, extension into the myometrium or parametrium, cervical invasion, and lymphadenopathy. It plays an important role in pre-operative planning by identifying high-risk features that may require lymph node dissection or adjuvant therapy. While endometrial cancer is surgically staged, MRI can accurately assess key features to guide treatment. It can also differentiate endometrial cancer from benign conditions like hyperplasia, adenomyosis, or fibroids.
This document discusses imaging of the chest in trauma patients. It describes the use of chest radiographs and CT scans to evaluate for fractures, pneumothorax, hemothorax, pulmonary contusions, diaphragm injuries, and vascular injuries. Specific signs on imaging that indicate various injuries are outlined. CT is highlighted as more sensitive than chest x-ray for detecting many injuries like small pneumothoraces or diaphragm injuries. The document provides an overview of diagnostic imaging of common chest trauma injuries.
The document discusses guidelines for accurately evaluating renal masses using CT and MRI imaging. It emphasizes the importance of performing unenhanced scans prior to contrast administration to identify enhancement within masses. For CT, a difference of 15-20 HU between unenhanced and enhanced images is considered evidence of enhancement. For MRI, subtraction of unenhanced and enhanced images allows clear identification of enhancement. The document provides guidance on differentiating benign from malignant masses and determining if a mass requires surgical intervention. Pseudotumors and infiltrative lesions can mimic renal cell carcinoma and require careful evaluation.
MRI is useful for evaluating various liver conditions. It is superior to CT for detecting small liver lesions and characterizing lesions. MRI can identify diffuse liver diseases affecting hepatocytes or reticuloendothelial cells, causing homogeneous or segmental changes. Cirrhosis appears as numerous low signal regenerative nodules on T2-weighted images. Hemangiomas are intensely hyperintense on T2-weighted images and enhance peripherally on contrast images. Dysplastic nodules are generally hypointense on T1-weighted images and do not enhance with contrast. MRI utilizes multiple sequences and techniques to comprehensively evaluate liver tumors, diffuse diseases, and incidental findings.
This document provides information on endometrial carcinoma, cervical cancer, and uterine sarcomas as assessed by MRI. It begins with an overview of endometrial carcinoma histology and prognosis factors. It then details the MRI protocol for evaluating these cancers, including sequences used. The document describes the typical MRI appearances of these cancers and their stages according to FIGO classification. It concludes with sections on the MRI features of various uterine sarcomas, including leiomyosarcoma, endometrial stromal sarcoma, undifferentiated endometrial sarcoma, and adenosarcoma.
Urinary tract infections can lead to pyelonephritis, an inflammation of the kidney that is diagnosed using clinical symptoms and laboratory tests. Imaging findings on ultrasound, CT, MRI, and nuclear medicine scans include wedge-shaped regions of reduced enhancement and perfusion in the kidney following infection originating in the bladder. While most cases are treated with antibiotics, imaging may be used to identify complications or guide management of high-risk patients.
radiological anatomy of retroperitoneum powerpointDactarAdhikari
brief and concise on radiological anatomy of retroperitoneum
includes topic like pararenal space,perirenal space,fascial plane,retroperitoneum hematoma and sign of mass origin
This document discusses head and neck paragangliomas (HNPs), which are rare neoplasms arising from paraganglionic tissue located in the head and neck region. It defines paragangliomas and paraganglia, and describes the most common locations and characteristics of HNPs. The document also covers the histopathology, evaluation, and management of HNPs, noting that the majority are benign but locally invasive tumors that can be treated with surgery or radiotherapy depending on their size and location.
Unusual non epithelial tumors of head and neckDrAyush Garg
This document provides information on several unusual non-epithelial tumors of the head and neck region. It discusses glomus tumors, hemangiopericytomas, chordomas, lethal midline granuloma, chloroma, and radiation therapy techniques for treating some of these tumors. Key information includes the classification, epidemiology, pathology, clinical presentation, diagnostic workup, management including surgery and radiation therapy, and radiation therapy techniques for glomus tumors, hemangiopericytomas, chordomas, and lethal midline granuloma.
The document discusses approaches to diagnosing benign retroperitoneal masses, noting that primary retroperitoneal neoplasms make up 0.1-0.2% of all malignancies and can be either benign or malignant. It describes methods for determining if a mass is retroperitoneal versus intra-abdominal, identifying its organ of origin, and recognizing characteristics like fat, cysts, necrosis and vascularity that provide diagnostic clues. Learning objectives cover evaluating tumor location, organ of origin, and specific imaging findings for retroperitoneal tumors.
The document discusses the anatomy and divisions of the mediastinum. It is divided into superior and inferior mediastinum by an imaginary line passing through the sternal angle anteriorly and lower border of the 4th thoracic vertebra posteriorly. The inferior mediastinum is further divided into anterior, middle and posterior mediastinum. Each compartment contains different structures like blood vessels, nerves and lymph nodes. Common tumors in different mediastinal compartments are also mentioned. Radiological anatomy and signs to locate mediastinal masses are described along with epidemiology of mediastinal tumors.
Radiology Spotters collection by Dr Pradeep. Nice collection Radiology spotters mixed collection ppt made by or collected by Dr. Pradeep, this is a collection of confusing spotter and very important spotter commonly asked in exams, our references is radiopaedia, learning radiology and Aunt Minnie.. Thanks
The document discusses various central nervous system infections, how they can be classified, their routes of entry and imaging appearances. It covers congenital infections including TORCH infections, acquired pyogenic infections such as meningitis, abscesses and ventriculitis. It also discusses viral, parasitic and fungal infections of the CNS. For each type of infection, the causative pathogens, locations, presentations and characteristic imaging findings are outlined.
Presentation1.pptx, radiological imaging of skeletal dysplasiaAbdellah Nazeer
This document provides radiological images and descriptions of several skeletal dysplasias. It discusses conditions such as cleidocranial dysplasia, which can cause respiratory distress in newborns. Other conditions summarized include osteopoikilosis, mucopolysaccharidoses, multiple epiphyseal dysplasia, metaphyseal dysplasia, spondyloepiphyseal dysplasia, chondroectodermal dysplasia, achondroplasia, fibrous dysplasia, and dysplasia epiphysealis hemimelica. For each condition, the document highlights features visible in imaging and clinical symptoms.
Renal tuberculosis can present in various ways on imaging. Early manifestations include papillary necrosis and focal cortical lesions on ultrasound. As the disease progresses, it can cause multifocal strictures, hydronephrosis, and mural thickening on CT. End-stage disease results in very thin parenchyma resembling multiple thin-walled cysts with amorphous calcification. MRI can detect small caseating or non-caseating granulomas. Treatment involves multi-drug therapy while nephrectomy or drainage procedures may be needed in severe cases. The document discusses renal TB imaging findings on various modalities and differential diagnoses.
Imaging of spinal cord acute myelopathiesNavni Garg
This presentation provides a comprehensive review of imaging of causes of acute myelopathies and a systemic approach for narrowing down the differentials
Radiological imaging of mediastinal massesPankaj Kaira
1. CT is the most important tool for evaluating mediastinal masses and characterizing their nature and extent.
2. Thymomas are the most common primary mediastinal neoplasm, typically occurring in patients over 40 and appearing on CT as well-defined solid masses in the anterior mediastinum that can demonstrate calcification.
3. CT is useful for staging thymomas and identifying features like invasion of surrounding tissues or distant metastases that indicate more advanced disease.
This document contains 23 cases of gastrointestinal and hepatobiliary findings from imaging studies. Each case includes a description of findings and differential diagnoses. The cases cover a wide range of conditions affecting the esophagus, stomach, small bowel, colon, liver and bile ducts.
1. The document describes various genitourinary findings on imaging studies including CT and MRI scans.
2. Key findings mentioned include unilateral renal agenesis, ipsilateral seminal vesicle cyst, and ejaculatory duct obstruction consistent with Zinner syndrome, thick-walled urinary bladder with wall calcifications seen in schistosomiasis, and a T-shaped copper IUD seen within the urinary bladder.
3. Imaging findings are provided to help diagnose and characterize conditions involving the kidneys, urinary tract, prostate, testes and female pelvic organs.
This document discusses cystic pancreatic tumours, focusing on intraductal papillary mucinous neoplasms (IPMN). IPMNs are rare cystic tumours arising from the pancreatic duct epithelium that cause duct dilation and mucin secretion. On imaging, main duct IPMN displays diffuse or segmental pancreatic duct dilation filled with mucin, while branch duct IPMN shows single or multiple dilated side branches. Mural nodules or solid components indicate higher malignancy risk. Surgical resection is recommended for main duct IPMN due to high malignancy risk, while branch duct IPMN may be surveilled if small with no malignant features. Differential diagnosis includes serous cystadenoma, mucinous cystic ne
Radiology plays an important role in evaluating gastrointestinal lymphoma. Primary gastrointestinal lymphoma arises in the lymphatic tissue of the bowel rather than lymph nodes. Common sites of involvement include the stomach, small bowel, and colon. On imaging, gastrointestinal lymphoma can appear as thickened folds, masses, strictures, or diffuse bowel wall thickening. Staging involves assessing for involvement of lymph nodes, adjacent organs, or distant metastases. Radiology is useful for diagnosis, evaluating extent of disease, and monitoring treatment response in gastrointestinal lymphoma.
Presentation1, radiological imaging of endometrial carcinoma.Abdellah Nazeer
MRI is a valuable tool for assessing endometrial cancer by depicting tumor size, extension into the myometrium or parametrium, cervical invasion, and lymphadenopathy. It plays an important role in pre-operative planning by identifying high-risk features that may require lymph node dissection or adjuvant therapy. While endometrial cancer is surgically staged, MRI can accurately assess key features to guide treatment. It can also differentiate endometrial cancer from benign conditions like hyperplasia, adenomyosis, or fibroids.
This document discusses imaging of the chest in trauma patients. It describes the use of chest radiographs and CT scans to evaluate for fractures, pneumothorax, hemothorax, pulmonary contusions, diaphragm injuries, and vascular injuries. Specific signs on imaging that indicate various injuries are outlined. CT is highlighted as more sensitive than chest x-ray for detecting many injuries like small pneumothoraces or diaphragm injuries. The document provides an overview of diagnostic imaging of common chest trauma injuries.
The document discusses guidelines for accurately evaluating renal masses using CT and MRI imaging. It emphasizes the importance of performing unenhanced scans prior to contrast administration to identify enhancement within masses. For CT, a difference of 15-20 HU between unenhanced and enhanced images is considered evidence of enhancement. For MRI, subtraction of unenhanced and enhanced images allows clear identification of enhancement. The document provides guidance on differentiating benign from malignant masses and determining if a mass requires surgical intervention. Pseudotumors and infiltrative lesions can mimic renal cell carcinoma and require careful evaluation.
MRI is useful for evaluating various liver conditions. It is superior to CT for detecting small liver lesions and characterizing lesions. MRI can identify diffuse liver diseases affecting hepatocytes or reticuloendothelial cells, causing homogeneous or segmental changes. Cirrhosis appears as numerous low signal regenerative nodules on T2-weighted images. Hemangiomas are intensely hyperintense on T2-weighted images and enhance peripherally on contrast images. Dysplastic nodules are generally hypointense on T1-weighted images and do not enhance with contrast. MRI utilizes multiple sequences and techniques to comprehensively evaluate liver tumors, diffuse diseases, and incidental findings.
This document provides information on endometrial carcinoma, cervical cancer, and uterine sarcomas as assessed by MRI. It begins with an overview of endometrial carcinoma histology and prognosis factors. It then details the MRI protocol for evaluating these cancers, including sequences used. The document describes the typical MRI appearances of these cancers and their stages according to FIGO classification. It concludes with sections on the MRI features of various uterine sarcomas, including leiomyosarcoma, endometrial stromal sarcoma, undifferentiated endometrial sarcoma, and adenosarcoma.
Urinary tract infections can lead to pyelonephritis, an inflammation of the kidney that is diagnosed using clinical symptoms and laboratory tests. Imaging findings on ultrasound, CT, MRI, and nuclear medicine scans include wedge-shaped regions of reduced enhancement and perfusion in the kidney following infection originating in the bladder. While most cases are treated with antibiotics, imaging may be used to identify complications or guide management of high-risk patients.
radiological anatomy of retroperitoneum powerpointDactarAdhikari
brief and concise on radiological anatomy of retroperitoneum
includes topic like pararenal space,perirenal space,fascial plane,retroperitoneum hematoma and sign of mass origin
This document discusses head and neck paragangliomas (HNPs), which are rare neoplasms arising from paraganglionic tissue located in the head and neck region. It defines paragangliomas and paraganglia, and describes the most common locations and characteristics of HNPs. The document also covers the histopathology, evaluation, and management of HNPs, noting that the majority are benign but locally invasive tumors that can be treated with surgery or radiotherapy depending on their size and location.
Unusual non epithelial tumors of head and neckDrAyush Garg
This document provides information on several unusual non-epithelial tumors of the head and neck region. It discusses glomus tumors, hemangiopericytomas, chordomas, lethal midline granuloma, chloroma, and radiation therapy techniques for treating some of these tumors. Key information includes the classification, epidemiology, pathology, clinical presentation, diagnostic workup, management including surgery and radiation therapy, and radiation therapy techniques for glomus tumors, hemangiopericytomas, chordomas, and lethal midline granuloma.
Intracranial neoplasms can be benign or malignant tumors that form within the cranial or spinal cavity. There are two main types - primary tumors that originate from brain cells, and secondary tumors that metastasize from other organs like the lung or breast. Symptoms arise from the tumor infiltrating and compressing brain tissue. Diagnosis involves neuroimaging to identify the mass and contrast enhancement. Treatment options depend on the tumor type, with more invasive tumors requiring surgery and radiation therapy while palliative care is used for metastatic tumors.
The document discusses retroperitoneal masses, which can be classified as solid or cystic, neoplastic or non-neoplastic. Common solid neoplastic masses include liposarcoma, leiomyosarcoma, and malignant fibrous histiocytoma. Neurogenic tumors and lymphomas also occur. Presentation is usually nonspecific symptoms or a large abdominal mass. Investigation involves blood tests, imaging like CT, and biopsy. Wide surgical resection is the standard treatment when possible.
Meningioma is a type of tumor that arises from the meninges, the membranes surrounding the brain and spinal cord. It is the most common non-cancerous brain tumor, accounting for 20% of all primary brain tumors. The standard treatment is surgical resection if the tumor is symptomatic or growing in size. For inoperable or recurrent tumors, radiation therapy and medical therapies may be options, though medical therapies have limited effectiveness. The prognosis depends on the tumor grade, with lower grade tumors having better outcomes.
Pediatric solid tumors are a diverse group of cancers that arise in children. They account for 60% of pediatric malignant neoplasms and can originate from mesoderm, endoderm or ectoderm tissues. The most common types are brain tumors, neuroblastoma, rhabdomyosarcoma, Wilms' tumor, and osteosarcoma. Presentation depends on tumor location and type but may include masses, compression symptoms, metastases, and paraneoplastic effects. Diagnosis involves imaging, biopsy and laboratory tests. Treatment involves surgery, chemotherapy and/or radiation depending on tumor characteristics and stage. Prognosis depends on specific tumor type and stage.
Thyroid malignancies are the most common endocrine malignancies. The annual incidence is 3.7 per 100,000 people with a 3:1 female to male ratio. The main types are papillary carcinoma (60% of cases), follicular carcinoma (17%), anaplastic carcinoma (13%), and medullary carcinoma (6%). Risk factors include a history of radiation exposure, family history, and certain genetic syndromes. Presentation varies from asymptomatic thyroid nodules to symptoms of compression. Treatment depends on the type and stage of cancer, and may include surgery, radioactive iodine therapy, chemotherapy, and external beam radiation. Prognosis ranges from generally good for differentiated cancers to very poor for anap
This document provides information about neck masses, including the major structures in the neck, lymph nodes, and the differential diagnosis. It discusses the major structures that can be palpated in the neck, such as the thyroid gland and lymph nodes. The differential diagnosis is divided into congenital, inflammatory, and neoplastic categories. Common congenital masses discussed include thyroglossal duct cysts, cystic hygromas, ectopic thyroid, plunging ranula, branchial cleft cyst, and dermoid cysts. Inflammatory masses are usually self-limiting.
Intraventricular mass (Radiology) of a child {A CASE}Dr.Santosh Atreya
An intraventricular mass was found in a 5-year-old child. The main differential diagnoses included choroid plexus carcinoma, central neurocytoma, primitive neuroectodermal tumor, and atypical teratoid rhabdoid tumor. Imaging findings like location in the ventricle, enhancement pattern, and presence of calcification or cysts can help narrow the diagnosis, as the masses have overlapping characteristics. An accurate diagnosis is important to guide surgical planning and determine appropriate post-operative treatment.
imaging of scrotum [Repaired] [Repaired].pptxdypradio
The scrotum contains the testes and epididymides. On ultrasound, the normal anatomy includes the oval testes with homogeneous echotexture and color flow. Potential pathological findings include infections like epididymitis, tumors such as seminomas which appear hypoechoic and well-defined, and traumatic injuries or torsion which may demonstrate absent flow. Malignancies require evaluation for metastases while infections require treatment with antibiotics. Imaging guides diagnosis and management of scrotal pathologies.
This document provides an overview of parapharyngeal space tumors including:
- Anatomy and divisions of the parapharyngeal space
- Common tumor types including salivary gland tumors, neurogenic tumors, and others
- Evaluation with imaging such as CT and MRI
- Surgical approaches including transoral, cervical, and infratemporal fossa approaches
- Specific details on paragangliomas, including carotid body and jugulotympanic tumors
This document provides an overview of common pediatric brain tumors located in the posterior fossa (infratentorial region). It discusses the most frequently used MRI sequences for evaluating these tumors and provides clinical and imaging features of the most common tumor types, including medulloblastoma, ependymoma, pilocytic astrocytoma, and brainstem glioma. Differential diagnoses are also reviewed. Key sequences discussed are T1WI, T2WI, FLAIR, DWI, and post-contrast T1WI. Common features and imaging findings are highlighted for each tumor type in 1-3 sentences.
This document discusses spinal neoplasms and provides classifications and imaging features of various tumors of the spine. It classifies spinal tumors as intramedullary, intradural-extramedullary, or extradural based on their point of origin. Common intramedullary tumors discussed include ependymomas, astrocytomas, gangliogliomas, and hemangioblastomas. Intradural-extramedullary tumors mentioned are meningiomas and nerve sheath tumors. Extradural tumors can be single lesions such as bone tumors or multiple lesions like metastatic disease. Magnetic resonance imaging plays a key role in evaluating and characterizing spinal tumors.
- Neuroblastoma is a type of childhood cancer that develops from immature nerve cells and most commonly affects infants and young children.
- It can arise in adrenal glands or sympathetic nervous system ganglia and often spreads to bones, bone marrow, liver and other sites.
- Presentation varies from asymptomatic masses to symptoms of metastasis like bone pain or organ compression. Diagnosis involves urine and bone marrow tests detecting nerve cell markers.
- Staging uses the International Neuroblastoma Staging System and treatment may include surgery, chemotherapy, radiation, stem cell transplant, immunotherapy and retinoids depending on risk level.
The document discusses various pediatric retroperitoneal masses. It begins by noting that abdominal masses are most common in children under 5 years old and retroperitoneal masses in neonates are often kidney-related and benign. It then characterizes the retroperitoneal space and lists common retroperitoneal organs. Several pathologies are discussed in detail, including neuroblastoma, Wilms tumor, nephroblastomatosis, and renal cell carcinoma. Imaging findings for many conditions are provided. The document serves as an overview of pediatric retroperitoneal masses and their imaging appearances.
PARAGANGLIOMAS- A complete review with recent updates.Nishit Gupta
This document discusses paragangliomas, which originate from paraganglia cells in the sympathetic and parasympathetic nervous systems. It describes the different types of extra-adrenal paragangliomas, including carotid body tumors, jugulotympanic paragangliomas, vagal paragangliomas, and retroperitoneal paragangliomas. The diagnosis involves clinical presentation, histopathological examination showing chief cells arranged in nests, and biochemical testing showing elevated catecholamines. Treatment typically involves pre-surgical medication to lower blood pressure followed by surgery to remove the tumor. The document also discusses pheochromocytomas, which originate in the adrenal medulla, and
This document provides information on intracranial tumours, including:
1. Gliomas are the most common primary brain tumour, with astrocytomas being the most common type. They are graded based on malignancy from Grade I to IV.
2. Meningiomas arise from the arachnoids and attach to the dura, comprising 18% of primary brain tumours. They are usually benign but can invade bone.
3. Clinical features of brain tumours include headaches, seizures, neurological deficits depending on the tumour location. Investigations include imaging scans and biopsies while treatments involve surgery, radiation, chemotherapy.
I LOVE NEUROSURGERY INITIATIVE: Spinal Tumorswalid maani
A comprehensive presentation about spinal tumors. Some concentration on anatomy. Discussion of presentation, diagnosis and management. Plenty of images.
Integrating Ayurveda into Parkinson’s Management: A Holistic ApproachAyurveda ForAll
Explore the benefits of combining Ayurveda with conventional Parkinson's treatments. Learn how a holistic approach can manage symptoms, enhance well-being, and balance body energies. Discover the steps to safely integrate Ayurvedic practices into your Parkinson’s care plan, including expert guidance on diet, herbal remedies, and lifestyle modifications.
Local Advanced Lung Cancer: Artificial Intelligence, Synergetics, Complex Sys...Oleg Kshivets
Overall life span (LS) was 1671.7±1721.6 days and cumulative 5YS reached 62.4%, 10 years – 50.4%, 20 years – 44.6%. 94 LCP lived more than 5 years without cancer (LS=2958.6±1723.6 days), 22 – more than 10 years (LS=5571±1841.8 days). 67 LCP died because of LC (LS=471.9±344 days). AT significantly improved 5YS (68% vs. 53.7%) (P=0.028 by log-rank test). Cox modeling displayed that 5YS of LCP significantly depended on: N0-N12, T3-4, blood cell circuit, cell ratio factors (ratio between cancer cells-CC and blood cells subpopulations), LC cell dynamics, recalcification time, heparin tolerance, prothrombin index, protein, AT, procedure type (P=0.000-0.031). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and N0-12 (rank=1), thrombocytes/CC (rank=2), segmented neutrophils/CC (3), eosinophils/CC (4), erythrocytes/CC (5), healthy cells/CC (6), lymphocytes/CC (7), stick neutrophils/CC (8), leucocytes/CC (9), monocytes/CC (10). Correct prediction of 5YS was 100% by neural networks computing (error=0.000; area under ROC curve=1.0).
TEST BANK For Basic and Clinical Pharmacology, 14th Edition by Bertram G. Kat...rightmanforbloodline
TEST BANK For Basic and Clinical Pharmacology, 14th Edition by Bertram G. Katzung, Verified Chapters 1 - 66, Complete Newest Version.
TEST BANK For Basic and Clinical Pharmacology, 14th Edition by Bertram G. Katzung, Verified Chapters 1 - 66, Complete Newest Version.
TEST BANK For Basic and Clinical Pharmacology, 14th Edition by Bertram G. Katzung, Verified Chapters 1 - 66, Complete Newest Version.
TEST BANK For Basic and Clinical Pharmacology, 14th Edition by Bertram G. Katzung, Verified Chapters 1 - 66, Complete Newest Version.
Histololgy of Female Reproductive System.pptxAyeshaZaid1
Dive into an in-depth exploration of the histological structure of female reproductive system with this comprehensive lecture. Presented by Dr. Ayesha Irfan, Assistant Professor of Anatomy, this presentation covers the Gross anatomy and functional histology of the female reproductive organs. Ideal for students, educators, and anyone interested in medical science, this lecture provides clear explanations, detailed diagrams, and valuable insights into female reproductive system. Enhance your knowledge and understanding of this essential aspect of human biology.
Cell Therapy Expansion and Challenges in Autoimmune DiseaseHealth Advances
There is increasing confidence that cell therapies will soon play a role in the treatment of autoimmune disorders, but the extent of this impact remains to be seen. Early readouts on autologous CAR-Ts in lupus are encouraging, but manufacturing and cost limitations are likely to restrict access to highly refractory patients. Allogeneic CAR-Ts have the potential to broaden access to earlier lines of treatment due to their inherent cost benefits, however they will need to demonstrate comparable or improved efficacy to established modalities.
In addition to infrastructure and capacity constraints, CAR-Ts face a very different risk-benefit dynamic in autoimmune compared to oncology, highlighting the need for tolerable therapies with low adverse event risk. CAR-NK and Treg-based therapies are also being developed in certain autoimmune disorders and may demonstrate favorable safety profiles. Several novel non-cell therapies such as bispecific antibodies, nanobodies, and RNAi drugs, may also offer future alternative competitive solutions with variable value propositions.
Widespread adoption of cell therapies will not only require strong efficacy and safety data, but also adapted pricing and access strategies. At oncology-based price points, CAR-Ts are unlikely to achieve broad market access in autoimmune disorders, with eligible patient populations that are potentially orders of magnitude greater than the number of currently addressable cancer patients. Developers have made strides towards reducing cell therapy COGS while improving manufacturing efficiency, but payors will inevitably restrict access until more sustainable pricing is achieved.
Despite these headwinds, industry leaders and investors remain confident that cell therapies are poised to address significant unmet need in patients suffering from autoimmune disorders. However, the extent of this impact on the treatment landscape remains to be seen, as the industry rapidly approaches an inflection point.
Here is the updated list of Top Best Ayurvedic medicine for Gas and Indigestion and those are Gas-O-Go Syp for Dyspepsia | Lavizyme Syrup for Acidity | Yumzyme Hepatoprotective Capsules etc
Basavarajeeyam is a Sreshta Sangraha grantha (Compiled book ), written by Neelkanta kotturu Basavaraja Virachita. It contains 25 Prakaranas, First 24 Chapters related to Rogas& 25th to Rasadravyas.
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A proprietary approach developed by bringing together the best of learning theories from Psychology, design principles from the world of visualization, and pedagogical methods from over a decade of training experience, that enables you to: Learn better, faster!
Muktapishti is a traditional Ayurvedic preparation made from Shoditha Mukta (Purified Pearl), is believed to help regulate thyroid function and reduce symptoms of hyperthyroidism due to its cooling and balancing properties. Clinical evidence on its efficacy remains limited, necessitating further research to validate its therapeutic benefits.
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2. CASE
• 22yr old male patient present with Scalp swelling
which is gradually increasing in size associated with
On and Off headache since 1 year.
• Few episodes of severe abdominal pain associated
with vomiting on exertional activities since 8
months.
10. Posterior Mediastinum
• Contains following structures: sympathetic ganglia,
nerve roots, lymph nodes, parasympathetic chain,
thoracic duct, descending thoracic aorta, small vessels
and the vertebrae.
• Most are NEUROGENIC in nature.
• Can arise from the sympathetic ganglia (eg neuroblastoma) or
from the nerve roots (eg schwannoma or neurofibroma).
• CYSTIC LESIONS will be either neuroenteric cysts,
schwannomas or meningoceles.
• FAT CONTAINING LESIONS will be extramedullary
hematopoiesis. When the anemia is resolved the
extramedullary marrow will stop producing blood and
become fatty.
11. Neurogenic Tumors
• MC cause of posterior mediastinal masses.
• 20% of all adult and 35% of all pediatric mediastinal neoplasms
are due to neurogenic tumors.
• Broadly, these lesions can be classified as:
1. TUMORS OF THE PERIPHERAL NERVES
(neurofibromas, schwannomas, malignant tumors of nerve sheath
origin),
2. TUMORS OF SYMPATHETIC GANGLIA
(ganglioneuromas, ganglioneuroblastomas,
neuroblastomas),
3. TUMORS OF PARASYMPATHETIC GANGLIA
(paraganglioma, pheochromocytoma).
• Peripheral nerve tumors are more common in adults,
• Sympathetic ganglia tumors are more common in children.
12. Sympathetic ganglia tumors
NEUROGENIC TUMORS
• They appear as well-circumscribed, smooth or lobulated
masses that may contain calcifications.
• Ganglioneuromas and ganglioneuroblastomas usually manifest
as well-marginated, elliptical, posterior mediastinal masses
that extend vertically over three to five vertebral bodies.
• Usually located lateral to the spine and may cause pressure
erosion on adjacent vertebral bodies
13. • CT has proven to be the superior imaging technique when
identifying tumor size, organ of origin, tissue invasion,
vascular encasement, adenopathy, and calcifications.
• MRI is the modality of choice for evaluating intraspinal
extension
• Measurement of catecholamine metabolites in the urine and
histological examination of biopsy specimens allow
definitive diagnosis.
• Distant metastases is assessed by using MIBG scintigraphy.
14. NEUROBLASTOMA
• They account for 8–10% of all tumors diagnosed in
pediatric patients and 80% of those found in children under 5
years of age .
• They rarely develop in children over 10.
• Males are affected more frequently than females .
• The tumors can arise wherever sympathetic nerve tissue is
present. The most common locations include the adrenal
glands (35%), paraspinal retroperitoneal ganglia (30–35%),
posterior mediastinum (20%), head and neck (1–5%), and
the pelvis (2–3%)
15. • Posterior mediastinum is also the most common extra-
abdominal location of neuroblastomas
• Neuroblastomas are highly malignant tumors that typically
occur in children younger than 5 years.
• A posterior mediastinal mass in this age group should be
considered a neuroblastoma until proved otherwise.
• On CT neuroblastomas manifest as paraspinal masses of
heterogeneous, predominantly soft tissue attenuation, contain
areas of hemorrhage, necrosis, cystic degeneration, and
calcification (30%).
16. • MR: heterogeneous signal
intensity on all pulse sequences
and show heterogeneous
enhancement following
gadolinium administration.
• Neuroblastomas also have a
tendency to cross the midline
• Around 1% of all neuroblastic
tumors metastasize, generally via
the vascular or lymphatic system.
• Common sites of metastatic
involvement are the liver, lung,
bone, and bone marrow. Patient
age and tumor stage at diagnosis
are major determinants of
outcome
T2-weighted MRI large mass in the posterior mediastinum
17. GANGLIONEUROBLASTOMA
• Ganglioneuroblastoma is a rare variety of peripheral neuroblastic
tumor that can arise anywhere along the sympathetic nervous
system.
• It occurs almost exclusively in the pediatric population usually 5-
10 years.
• It exhibit varying degrees of malignancy and is usually aggressive
with evidence of local and intraspinal invasion.
• Variable appearance on CT scans and can be cystic or solid.
• They may be small and homogenous or large and heterogenous .
• They appear heterogeneous on MRIs, with variable enhancement
and low signal-intensity on T1-weighted images and high signal-
intensity on T2-weighted images
18. • Ganglioneuromas can be
differentiated from more
aggressive neuroblastomas and
ganglioneuroblastomas by their
regular contours and lack of tissue
invasion and vessel encasing,
their occurrence in older patients,
and their discrete, punctate
calcifications on CT scans.
• Ganglioneuromas rarely
metastasize, whereas
neuroblastomas and
ganglioneuroblastomas can
metastasize to bone, skin, and
other organs.
19. PARAGANGLIOMAS
• Paragangliomas, sometimes called extraadrenal
pheochromocytomas, are rare neurogenic tumors
that arise from highly vascularized specialized
neural crest cells called paraganglia that are
symmetrically distributed along the aortic axis in
close association with the sympathetic chain in the
neck, chest, abdomen, and pelvis.
• The largest collection of paraganglia includes the
paired organs of Zuckerkandl that overlie the aorta
at the level of the inferior mesenteric artery
19
20. • Patients with paragangliomas present in the fourth
and fifth decades of life, although malignant
paragangliomas may sometimes arise in younger
patients.
• Men and women are affected equally.
• Up to 40% of paragangliomas are malignant, as
compared to 10% of adrenal pheochromocytomas.
• Paragangliomas may spread both via the lymphatics
and hematogenously, and the most common sites of
metastatic disease are lymph nodes, bone, lung, and
liver
20
21. LOCATION
Parasympathetic paragangliomas
• Parasympathetic paragangliomas
arise within paraganglia of the head
and neck in association with the
branches of the glossopharyngeal
and vagus nerve .
• Carotid body paraganglioma
• Juglotympanic paraganglioma
• Vagal paraganglioma
• Laryngeal paraganglioma
21
22. Sympathetic paragangliomas
• Arise in paraganglia below the level of the neck.
secrete catecholamines and can be intra- or extra-
adrenal.
• Extra-adrenal: arise outside the adrenal gland along
the length of the sympathetic chain
• abdomen
• organ of Zuckerkandl
• bladder base
• thorax (mediastinal paraganglioma)
• paravertebral (aortosympathetic paraganglia)
• great vessels of the chest (aortopulmonary
paraganglia)
• cardiac (extremely rare)
• intra-adrenal: arise within the adrenal medulla
• phaeochromocytoma
22
23. CLINICAL PRESENTATION
• Sympathetic paragangliomas present with features
of catecholamine-excess, such as headaches,
palpitations, diaphoresis and hypertension.
• Whereas, parasympathetic paragangliomas present
more commonly with mass-effect such as cranial
nerve palsies, a neck mass or tinnitus.
23
24. GENETICS
Paragangliomas are the most strongly hereditary group of tumors.
Most common genetic cause of hereditary paragangliomas are
mutations in the succinate dehydrogenase (SDH)
They are also associated with four clinical syndromes:
• Von Hippel-lindau Syndrome
• Multiple Endocrine NeoplasiaTypes 2AAnd 2B
• Neurofibromatosis Type 1
• Carney-stratakis Syndrome (AD Condition comprising of
familial paraganglioma and gastric stromal sarcoma)
24
25. Both anatomical and functional imaging of paragangliomas is
required for diagnosis and staging.
• Anatomical imagining includes CT and MRI.
• Functional imaging modalities includes: 123I-MIBG scintigraphy
, 18F-FDA PET, 18F-DOPA PET
• CT: typically heterogeneous and enhance
intensely after iv contrast administration.
• MR: Hypointense on T1WI
Hyperintense on T2WI
• Flow voids are noted sometimes s/o
high vascularity.
26. PARAGANGLIOMA
Points in Favour Points Against
• Hetrogenously
enhancing mass lesion
with central areas of
necrosis
• Bony,calvarial and lung
metastasis
• Clinical history- Severe
abdominal pain on
exertion
• Oblong hetrogenously
enhancing mass lesion
extending along 3 to 4
vertebral level.
27. GANGLIONEUROBLASTOMA
Points in favour Points against
• Heterogenously
enhancing oblong soft
tissue lesion
• Bony, calvarial and
lung metastasis
• Incidence –rare variety
• Age- 5-10 years
• Extension in spinal
canal causing widening
of NF
• Calcification
28. CASE SUMMARY
• 22 yr old male presented with slowly worsening
headache and scalp swelling along with severe
abdominal pain on exertional activities.
• On Imaging- het. enhancing mass lesion with
internal non enhancing necrotic area in posterior
mediastinum with calvarial, bony and lung
metastasis
• No e/o calcification or extension into neural
foramina is noted.
31. Q1. which of the following is true about ganglioneuroma is ,
except:
A. Ganglioneuromas are the most common posterior mediastinal
mass in adolescents and young adults
B. They are malignant tumors originating from sympathetic
ganglia.
C. well-marginated posterior mediastinal masses that extend
vertically over three to five vertebral bodies.
D. usually located lateral to the spine and may cause pressure
erosion on adjacent vertebral bodies
Ref-John .R.Haaga’s CT and MRI of the whole body,6th edition, 2016,
1st volume pg 1058
32. • ANS 1-B
Q2. Which of the following signs indicate mass in posterior
mediastinum?
A. Widened paratrachel strip
B. Doughnut sign
C. Cervicothoracic sign
D. Obliteration of anterior junctional line
REF: Grainger and Allison’s diagnostic radiology, 6th edition,
2015, 1st vol ,pg233
33. • ANS 2-C
Q3. Which of the following is false about neuroblastoma?
A. Neuroblastomas are highly malignant tumors that typically
occur in children younger than 5 years
B. Neuroblastomas have a tendency to cross the midline
C. Common sites of metastatic involvement are the liver, lung,
bone and bone marrow
D. Calcification is not seen in neuroblastoma
Ref-John .R.Haaga’s CT and MRI of the whole body,6th edition, 2016,
1st volume pg 1058
34. • ANS 3-D
Q4.Which of the following sign is
shown in the given image ?
A. Hilum overlay sign
B. Anterior junctional line
C. Doughnut sign
D. Azygoesophageal recess
REF: Grainger and Allison’s diagnostic
radiology, 6th edition, 2015,
1st vol ,pg233
35. • ANS 4-C
Q 5. Which of the following sign is
shown in the given image ?
A. Hilum overlay sign
B. Cervicothoracic sign
C. Doughnut sign
D. Azygoesophageal recess
REF: Grainger and Allison’s diagnostic
radiology, 6th edition, 2015,
1st vol ,pg233
36. Ans5. B
Q6. A 52-year-old man with cough and
dysphagia On CECT images
demonstrate a low-density mass with a
cystic appearance in the subcarinal
region that has a mild mass eff ect on
the esophagus, which is seen between
the aorta and the cystic mass
A. Bronchogenic cyst (BC)
B. Esophageal (enteric) duplication
cyst
C. Pericardial cyst
D. Thymoma
37. Ans6. A
Q7. A 50-year-old man with back
pain.chest radiograph demonstrates a
large, well-circumscribed mass in the
left upper chest ,NCCT shows that the
mass has heterogeneous density. It
forms obtuse angles with the pleura,
suggesting an extrapulmonary
location.
A. Schwannoma
B. Meningocele
C. Lymphoma
D. Ganglioneuroma
38. Ans7. A
Q8.Most common site of paraganglioma in
retroperitoeum-
a). Anterior to aorta at the level of origin of superior
mesenteric artery
b). Anterior to aorta at the level of origin of inferior
mesenteric artery
c). Anterior to aorta at the level of origin of celiac axis
d).Posterior to aorta at the level of origin of inferior
mesenteric artery
Ref-radiographics, imaging of uncommon retroperitoneal
masses, July-August 2011
39. Ans8. B
Q9.Site of origin of ganglioneuroma-.
a). Parasympathetic ganglia
b).Sympathetic ganglia
c). Both A and B
d).Chemoreceptor
Ref-radiographics, imaging of uncommon retroperitoneal
masses, July-August 2011
40. Ans9. B
Q10. A 49-year-old woman
with muscle weakness.CT
chest demonstrates a well-
circumscribed, smooth,
hypodense mass in the anterior
mediastinum. There is no
evidence of vascular or pleural
involvement.
A. Thymoma
B. Seminomas
C. Thymic carcinoma
D. Teratoma
Well def het hypoechoic mass lesion wt few int necrotic area noted in rt paravertebral location in thoracoabdominal region abutting IVC and rt lobe of liver anteriorly and upper pole of rt kid inferomedially and pushing diaphragm anteriorly with mild pl effusion
Rest of the abdominal structures are appearing normal
RWD lesion in rt retrocrural space centered in rt paravertebral region extending from D8 to L1 vertebral level
The lesion is HE wt central non enhancing necrotic area. Ant lat abutting and displacing rt hemidiaphram and IVC wt mild LC of IVC, superomedialy abutting mediastinal pleura,
On lung window -STN noted in post seg of RUL measuring approx. 6mm
Multiple osteolytic lesions noted in visualised spine
Lung w1500 L -600
Bone w 1800 L 400
Abd w 400 L 50
Few extradural mass lesions involving adjacent calvarium, extension into soft tissues of the scalp, and mass effect on the underlying brain on left parito occipital region with multiple flow voids and intense vascularity on mra images s/o hypervascular metastasis
Along with sagittal t2 image showing het STAL in paravertebral region
As the mass confined in post mediastinum with calvarial bony and lung met my diff are
NCCT image demonstrates a large, left heterogeneous paraspinal lesion with speckled calcifications. The mass is displacing the mediastinum to the right.
APP = Aorticopulmonary Paraganglia,
VHI- Hemangioblastoma,inc risk of RCC,pheochromcytoma,pancreatic lesions,eye dysfunction,liver cyst
It is formed by the Radiolucent area formed By bronchus intermedius
At the central portion And by surrounding Opacities of the lymph Nodes s/o middle mediastinal mass
The anterior mediastinum stops at the level of the superior clavicle. when a mass extends above the superior clavicle, it is located either in the neck or in the posterior mediastinum. When lung tissue comes between the mass and the neck, the mass is probably in the posterior mediastinum. This is known as the Cervicothoracic Sign..
Bronchogenic cyst (BC): An entirely cystic mass adjacent to the trachea or in the subcarinal region is a characteristic
• Esophageal (enteric) duplication cyst: Esophageal duplication cysts are usually adjacent to or within the esophageal wall.
• Pericardial cyst: The most common location of a pericardial cyst is in the cardiophrenic angles, more commonly on the right side.
• Schwannoma: More than 90% of posterior mediastinal masses are neurogenic in origin. The smooth margins and
signal characteristics favor a nerve sheath tumor. • Meningocele: A meningocele is a nonenhancing cystic
mass. Enlargement of the neural foramen and contiguity with the thecal sac are expected.
• Lymphoma: Additional intrathoracic lymphadenopathy
would be expected.
MC anterior mediastinal mass, homogeneous density, smooth borders, and lack of local invasion support thymoma.
Seminomas are the mc primary malignant germ cell tumor of the mediastinum and tend to be well defi ned and homogeneousseen in younger patients. Fat or calcium is often seen in teratomas.
• Thymic carcinoma: The tumors are typically heterogeneous and lobulated with poorly defi ned borders. Calcifi cationis seen in up to 40%. Local invasion and lymphadenopathy may be present.