This document provides information on the management of soft tissue sarcoma. It discusses the clinical presentation, patterns of spread, imaging, histology, grading, staging, prognostic factors and management of soft tissue sarcomas. The key points are:
1) Soft tissue sarcomas most commonly present as painless swellings in the extremities and can invade locally along fascial planes. Imaging like MRI is important for assessing tumor extent.
2) Histologically, the most common subtypes are undifferentiated pleomorphic sarcoma and liposarcoma. Grading systems consider tumor differentiation, mitosis and necrosis.
3) Staging is based on tumor size, depth, nodal status and metastasis
This document discusses brain tumors including their classification, imaging, and characteristics. It notes that cerebral tumors predominantly affect adults aged 55-65 and are relatively uncommon in children. Primary brain tumors can occur at any age but certain tumor types mainly affect specific age groups. Gliomas are the most common primary brain tumor in adults, comprising 45-65% of cases. Low-grade gliomas typically present with seizures and appear hypo-iso intense on CT and homogenously hyperintense on T2 MRI with little enhancement. Anaplastic astrocytomas present similarly but enhance strongly and inhomogenously on imaging. The document provides detailed information on tumor classification, imaging features, and characteristics.
The document discusses tumors of the pineal gland. It begins by describing the location and structure of the pineal gland. Pineal region tumors constitute a small percentage of intracranial tumors but are clinically important due to their location. Symptoms include increased intracranial pressure, headaches, nausea, and visual problems. The document then discusses the different types of pineal tumors and how they appear on various imaging modalities like MRI, CT, and radiography. Common tumors mentioned are germinomas, pineoblastomas, pineocytomas, and pineal cysts. MRI is the preferred imaging method for delineating pineal masses and distinguishing true pineal tumors from parapineal masses.
Dr. Kiran Kumar discusses the management of pituitary tumors. Pituitary tumors are most commonly found in adults aged 30-60 years and can cause hormonal issues or mass effect symptoms. Diagnostic evaluation involves blood tests, MRI imaging, and visual field testing. Treatment options include observation for small asymptomatic tumors, medication to control hormone levels, surgery to remove the tumor, and radiation therapy as an adjuvant treatment or for inoperable tumors. The goals of treatment are to remove the tumor, control hypersecretion, and preserve pituitary function without injury to surrounding structures.
Brain tumours: Analysis of a potential brain tumors
Relative prevalence of brain tumors in children. Metastases, anaplastic astrocytoma, and glioblastoma multiforme are rare. Pilocytic astrocytoma and PNETs are more common compared to adults
The document discusses various types of primary retroperitoneal masses. It describes the anatomy of the retroperitoneum and states that 70-80% of primary retroperitoneal neoplasms are malignant. The masses are divided into solid neoplastic masses including mesodermal neoplasms (such as liposarcomas, leiomyosarcomas, and malignant fibrous histiocytomas), neurogenic tumors, and germ cell/sex cord/stromal tumors. Characteristics of common subtypes such as liposarcoma, leiomyosarcoma, and schwannoma are provided. Imaging features on CT and MRI to identify and characterize these masses are also discussed.
This document provides information on the management of soft tissue sarcoma. It discusses the clinical presentation, patterns of spread, imaging, histology, grading, staging, prognostic factors and management of soft tissue sarcomas. The key points are:
1) Soft tissue sarcomas most commonly present as painless swellings in the extremities and can invade locally along fascial planes. Imaging like MRI is important for assessing tumor extent.
2) Histologically, the most common subtypes are undifferentiated pleomorphic sarcoma and liposarcoma. Grading systems consider tumor differentiation, mitosis and necrosis.
3) Staging is based on tumor size, depth, nodal status and metastasis
This document discusses brain tumors including their classification, imaging, and characteristics. It notes that cerebral tumors predominantly affect adults aged 55-65 and are relatively uncommon in children. Primary brain tumors can occur at any age but certain tumor types mainly affect specific age groups. Gliomas are the most common primary brain tumor in adults, comprising 45-65% of cases. Low-grade gliomas typically present with seizures and appear hypo-iso intense on CT and homogenously hyperintense on T2 MRI with little enhancement. Anaplastic astrocytomas present similarly but enhance strongly and inhomogenously on imaging. The document provides detailed information on tumor classification, imaging features, and characteristics.
The document discusses tumors of the pineal gland. It begins by describing the location and structure of the pineal gland. Pineal region tumors constitute a small percentage of intracranial tumors but are clinically important due to their location. Symptoms include increased intracranial pressure, headaches, nausea, and visual problems. The document then discusses the different types of pineal tumors and how they appear on various imaging modalities like MRI, CT, and radiography. Common tumors mentioned are germinomas, pineoblastomas, pineocytomas, and pineal cysts. MRI is the preferred imaging method for delineating pineal masses and distinguishing true pineal tumors from parapineal masses.
Dr. Kiran Kumar discusses the management of pituitary tumors. Pituitary tumors are most commonly found in adults aged 30-60 years and can cause hormonal issues or mass effect symptoms. Diagnostic evaluation involves blood tests, MRI imaging, and visual field testing. Treatment options include observation for small asymptomatic tumors, medication to control hormone levels, surgery to remove the tumor, and radiation therapy as an adjuvant treatment or for inoperable tumors. The goals of treatment are to remove the tumor, control hypersecretion, and preserve pituitary function without injury to surrounding structures.
Brain tumours: Analysis of a potential brain tumors
Relative prevalence of brain tumors in children. Metastases, anaplastic astrocytoma, and glioblastoma multiforme are rare. Pilocytic astrocytoma and PNETs are more common compared to adults
The document discusses various types of primary retroperitoneal masses. It describes the anatomy of the retroperitoneum and states that 70-80% of primary retroperitoneal neoplasms are malignant. The masses are divided into solid neoplastic masses including mesodermal neoplasms (such as liposarcomas, leiomyosarcomas, and malignant fibrous histiocytomas), neurogenic tumors, and germ cell/sex cord/stromal tumors. Characteristics of common subtypes such as liposarcoma, leiomyosarcoma, and schwannoma are provided. Imaging features on CT and MRI to identify and characterize these masses are also discussed.
Presentation2, radiological imaging of neck schwannoma.Abdellah Nazeer
A 32-year-old female presented with a left facial nerve schwannoma. Imaging showed a bilobed hyperintense mass in the left parotid and mastoid regions on T2-weighted imaging, connected by an interconnecting stalk along the vertical segment of the facial nerve. There was restricted diffusion seen within the peripheral rim of the tissue. Schwannomas are benign nerve sheath tumors that commonly occur in the head and neck region, arising from the cranial nerves. They appear as well-defined masses that are iso- to hyperintense on T1- and T2-weighted MRI relative to muscle. Characteristic features include identification of the nerve of origin and restricted diffusion.
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.
This seminar is presented as a part of weekly journal club and seminar regularly conducted at Apollo hospital,Kolkata Department of Radiation oncology.
Thymic tumors arise from the thymus gland in the anterior mediastinum. Thymomas are the most common type of thymic tumor and generally have an indolent growth pattern. Complete surgical resection is the primary treatment for thymomas. Adjuvant radiation and chemotherapy may be considered depending on the stage and completeness of resection. Thymic carcinomas are more aggressive and have a poorer prognosis than thymomas. Treatment involves surgical resection when possible along with chemotherapy and radiation.
1. Adrenal imaging uses modalities like ultrasound, CT, MRI, and nuclear medicine to evaluate the adrenal glands and detect abnormalities.
2. CT is often the first choice to evaluate adrenal diseases and can characterize adrenal masses using attenuation values, enhancement patterns, and lipid content analysis.
3. Benign adrenal lesions include adenomas, myelolipomas, cysts, infections, and hemorrhages. Adenomas are the most common and often appear well-defined and homogeneous with characteristic lipid content and enhancement patterns on CT and MRI.
This document summarizes information about sentinel lymph node biopsy for breast cancer. It discusses the history and technique of sentinel lymph node biopsy. It describes that the sentinel lymph node is the first lymph node to receive drainage from the primary tumor site, usually in the axilla. The document outlines the procedure for sentinel lymph node biopsy and evaluating biopsy specimens. It discusses studies that have shown sentinel lymph node biopsy is an accurate method for staging breast cancer and that completion axillary lymph node dissection may not be needed in all cases with limited sentinel lymph node involvement.
This document discusses various tumors and lesions that can occur in the posterior fossa region of the brain. It provides CT and MRI images and descriptions of common tumors in this area, including medulloblastoma, ependymoma, choroid plexus papilloma, brain stem gliomas, gangliogliomas, pilocytic astrocytomas, hemangioblastomas, and metastases from other cancers. The document is intended as an imaging guide for physicians to identify and diagnose different infra-tentorial lesions and tumors based on scan findings.
Medulloblastoma- A primitive neuroectodermal tumors (PNETs) is the most common malignant brain tumor of childhood (WHO IV)
arising from the vermis in the inferior medullary velum.
It comprises up to 18% of all pediatric brain tumors.
WNT and Shh pathway plays major role in its pathogenesis.
c-erbB-2 (HER2/neu) oncogene expression has prognostic value. Norcantharidin, Vismodegib, Sonidegib are the future in medulloblastoma.
This document discusses the management of early and locally advanced breast cancer. For early breast cancer, primary surgery involves lumpectomy or mastectomy followed by adjuvant treatment if needed based on tumor characteristics. Breast conserving surgery aims to preserve the breast while achieving comparable survival to mastectomy with low recurrence rates. Neoadjuvant therapy can help reduce tumor size for breast conservation. Locally advanced breast cancer may be treated with neoadjuvant chemotherapy to reduce the risk of recurrence and improve surgical outcomes. Neoadjuvant endocrine therapy is also an option for some postmenopausal women. Adjuvant radiation, chemotherapy, and hormone therapy are used based on tumor markers and response to neoadjuvant treatment. Regular
Transarterial chemoembolization (TACE) involves delivering chemotherapy drugs and embolic agents directly into liver cancers via catheters in the hepatic artery. TACE is generally used to treat hepatocellular carcinoma that cannot be surgically removed. During the procedure, a catheter is placed into the hepatic artery supplying the tumor and chemotherapy mixed with iodinated oil is injected, followed by embolization of the artery with gelatin sponges. TACE can reduce tumor size and symptoms but common side effects include abdominal pain and nausea. Response to treatment is evaluated after 3-4 weeks using imaging to assess the extent of tumor coverage by the oil and residual enhancement.
Brain metastasis is an advance diseases with poor overall prognosis management of which is full of controversies. This slide aims to make metastasis simplified.
- Retroperitoneal sarcomas are a heterogeneous group of tumors, with the most common subtypes being well-differentiated liposarcoma, dedifferentiated liposarcoma, and leiomyosarcoma.
- Biopsy is essential for diagnosis and should target the most solid areas on imaging. Neoadjuvant radiotherapy may help with resectability but data is limited.
- Complete surgical resection remains the mainstay of treatment when possible. Adjuvant therapies have not proven beneficial.
- Advanced disease is treated based on histology with chemotherapy, targeted therapies like pazopanib or trabectedin, and immunotherapy showing some promise particularly for liposar
A sentinel lymph node is the first lymph node that cancer is likely to spread to from a primary tumor. A sentinel lymph node biopsy identifies, removes, and examines this lymph node to determine if cancer cells are present. If cancer is found, it indicates the cancer may have spread to other lymph nodes or organs. Examining the sentinel lymph node helps determine the cancer stage and guides treatment planning. The procedure also reduces potential side effects of full lymph node surgery like lymphedema. Sentinel lymph node biopsies are used for cancers like breast cancer, melanoma, and others.
This document provides information on lymph node levels and classification of thyroid neoplasms. It describes the six levels of cervical lymph nodes and discusses papillary carcinoma and follicular carcinoma of the thyroid in detail. For papillary carcinoma, it covers presentation, histology, prognosis, treatment including surgery and radioactive iodine therapy. For follicular carcinoma, it discusses presentation, spread, histology and treatment. It also briefly summarizes other malignant thyroid tumors including medullary carcinoma, anaplastic carcinoma and thyroid lymphoma.
Primitive neuroectodermal tumor (PNET) is a highly malignant tumor composed of small round cells of neuroectodermal origin that affects soft tissue and bone. PNETs are classified into groups depending on location, with peripheral PNET (pPNET) occurring in soft tissue and bone outside the central nervous system. pPNET includes Ewing sarcoma and Askin tumor. Diagnosis involves ruling out other small round cell tumors through molecular cytogenetic studies showing translocation between chromosomes 11 and 22. PNET most commonly presents in adolescents and young adults with pain, swelling, and mass effect. Prognosis depends on tumor site, volume, and presence of metastasis. Treatment involves complete surgical resection when possible along with
This document provides an overview of thyroid cancer, including:
1. It describes the anatomy of the thyroid gland and risk factors for thyroid cancer such as radiation exposure and family history.
2. Papillary thyroid cancer is the most common type, and the document outlines the classification and presentation of thyroid cancers.
3. Diagnosis involves laboratory tests, ultrasound, and biopsy, while staging uses the TNM system.
4. Treatment typically involves surgery followed by radioactive iodine therapy or radiotherapy, with chemotherapy for advanced cases.
5. Prognosis depends on factors like histology, size, and spread, and follow up involves monitoring blood work and imaging tests.
Multiparametric (mp) mri of prostate cancerElsayed Salih
Multiparametric (mp) MRI combines anatomical T2-weighted imaging with functional techniques such as diffusion-weighted imaging (DWI), dynamic contrast-enhanced (DCE) imaging, and magnetic resonance spectroscopy (MRS) to improve prostate cancer detection and localization. T2-weighted imaging provides detail on zonal anatomy but has limited specificity for cancer. DWI and DCE help identify cancers as regions with restricted diffusion and early contrast enhancement respectively. The PI-RADS scoring system grades lesions on a scale of 1 to 5 based on findings from mpMRI. MpMRI can help guide biopsy or focal therapy of index lesions and select patients for active surveillance.
The document discusses the systematic approach to characterizing brain tumors on MRI. It describes three main steps: detection, localization, and characterization. Localization involves determining if a tumor is intra-axial or extra-axial based on signs like a CSF cleft between the brain and lesion. Characterization includes assessing features like enhancement pattern, border definition, and presence of necrosis to differentiate tumor types such as meningioma, schwannoma, glioma, and metastasis. The references provided give further information on diagnostic criteria.
This document provides information on various types of brain tumors classified by their cell of origin and grade. It discusses oligodendrogliomas, anaplastic oligodendrogliomas, and their typical imaging and clinical presentation. It also covers ependymomas, subependymomas, choroid plexus tumors, and other neuroepithelial tumors such as astroblastomas. Finally, it summarizes neuronal and glioneuronal tumors like gangliogliomas which are a common cause of tumor-related temporal lobe epilepsy.
1. Neuroendocrine tumors (NETs) arise from neuroendocrine cells throughout the body and share features like secretory granules and hormone production. Pancreatic NETs (PNETs) comprise 1-2% of pancreatic tumors.
2. PNETs can be functional, producing symptoms from hormone hypersecretion, or nonfunctional. Major functional types are insulinomas, gastrinomas, VIPomas, and glucagonomas. Nonfunctional PNETs are usually larger and have worse prognosis than functional tumors.
3. Treatment involves surgical resection for localized disease. For advanced or metastatic disease, options include somatostatin analogs, hepatic artery embolization, targeted drugs, and
I LOVE NEUROSURGERY INITIATIVE: INTRACRANIAL TUMORS.pptwalid maani
This document discusses intracranial tumors, including:
- Their incidence rates, with primary brain tumors occurring in 6 per 100,000 people and metastatic tumors in 30 per 100,000 people.
- Common tumor types like astrocytomas, oligodendrogliomas, ependymomas, medulloblastomas, meningiomas, and pituitary tumors.
- Risk factors, clinical presentation, investigations including CT, MRI, PET and angiography, pathology classification, and management approaches like surgery, radiation and chemotherapy.
This presentation reviews the current neurosurgical management of patients with medulloblastoma, including the data on molecular subtyping; uses “medulloblastoma” as a springboard to discuss other topics / tumor cell biology in general; and formulates research questions to further advance neurosurgical basic science.
Presentation2, radiological imaging of neck schwannoma.Abdellah Nazeer
A 32-year-old female presented with a left facial nerve schwannoma. Imaging showed a bilobed hyperintense mass in the left parotid and mastoid regions on T2-weighted imaging, connected by an interconnecting stalk along the vertical segment of the facial nerve. There was restricted diffusion seen within the peripheral rim of the tissue. Schwannomas are benign nerve sheath tumors that commonly occur in the head and neck region, arising from the cranial nerves. They appear as well-defined masses that are iso- to hyperintense on T1- and T2-weighted MRI relative to muscle. Characteristic features include identification of the nerve of origin and restricted diffusion.
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.
This seminar is presented as a part of weekly journal club and seminar regularly conducted at Apollo hospital,Kolkata Department of Radiation oncology.
Thymic tumors arise from the thymus gland in the anterior mediastinum. Thymomas are the most common type of thymic tumor and generally have an indolent growth pattern. Complete surgical resection is the primary treatment for thymomas. Adjuvant radiation and chemotherapy may be considered depending on the stage and completeness of resection. Thymic carcinomas are more aggressive and have a poorer prognosis than thymomas. Treatment involves surgical resection when possible along with chemotherapy and radiation.
1. Adrenal imaging uses modalities like ultrasound, CT, MRI, and nuclear medicine to evaluate the adrenal glands and detect abnormalities.
2. CT is often the first choice to evaluate adrenal diseases and can characterize adrenal masses using attenuation values, enhancement patterns, and lipid content analysis.
3. Benign adrenal lesions include adenomas, myelolipomas, cysts, infections, and hemorrhages. Adenomas are the most common and often appear well-defined and homogeneous with characteristic lipid content and enhancement patterns on CT and MRI.
This document summarizes information about sentinel lymph node biopsy for breast cancer. It discusses the history and technique of sentinel lymph node biopsy. It describes that the sentinel lymph node is the first lymph node to receive drainage from the primary tumor site, usually in the axilla. The document outlines the procedure for sentinel lymph node biopsy and evaluating biopsy specimens. It discusses studies that have shown sentinel lymph node biopsy is an accurate method for staging breast cancer and that completion axillary lymph node dissection may not be needed in all cases with limited sentinel lymph node involvement.
This document discusses various tumors and lesions that can occur in the posterior fossa region of the brain. It provides CT and MRI images and descriptions of common tumors in this area, including medulloblastoma, ependymoma, choroid plexus papilloma, brain stem gliomas, gangliogliomas, pilocytic astrocytomas, hemangioblastomas, and metastases from other cancers. The document is intended as an imaging guide for physicians to identify and diagnose different infra-tentorial lesions and tumors based on scan findings.
Medulloblastoma- A primitive neuroectodermal tumors (PNETs) is the most common malignant brain tumor of childhood (WHO IV)
arising from the vermis in the inferior medullary velum.
It comprises up to 18% of all pediatric brain tumors.
WNT and Shh pathway plays major role in its pathogenesis.
c-erbB-2 (HER2/neu) oncogene expression has prognostic value. Norcantharidin, Vismodegib, Sonidegib are the future in medulloblastoma.
This document discusses the management of early and locally advanced breast cancer. For early breast cancer, primary surgery involves lumpectomy or mastectomy followed by adjuvant treatment if needed based on tumor characteristics. Breast conserving surgery aims to preserve the breast while achieving comparable survival to mastectomy with low recurrence rates. Neoadjuvant therapy can help reduce tumor size for breast conservation. Locally advanced breast cancer may be treated with neoadjuvant chemotherapy to reduce the risk of recurrence and improve surgical outcomes. Neoadjuvant endocrine therapy is also an option for some postmenopausal women. Adjuvant radiation, chemotherapy, and hormone therapy are used based on tumor markers and response to neoadjuvant treatment. Regular
Transarterial chemoembolization (TACE) involves delivering chemotherapy drugs and embolic agents directly into liver cancers via catheters in the hepatic artery. TACE is generally used to treat hepatocellular carcinoma that cannot be surgically removed. During the procedure, a catheter is placed into the hepatic artery supplying the tumor and chemotherapy mixed with iodinated oil is injected, followed by embolization of the artery with gelatin sponges. TACE can reduce tumor size and symptoms but common side effects include abdominal pain and nausea. Response to treatment is evaluated after 3-4 weeks using imaging to assess the extent of tumor coverage by the oil and residual enhancement.
Brain metastasis is an advance diseases with poor overall prognosis management of which is full of controversies. This slide aims to make metastasis simplified.
- Retroperitoneal sarcomas are a heterogeneous group of tumors, with the most common subtypes being well-differentiated liposarcoma, dedifferentiated liposarcoma, and leiomyosarcoma.
- Biopsy is essential for diagnosis and should target the most solid areas on imaging. Neoadjuvant radiotherapy may help with resectability but data is limited.
- Complete surgical resection remains the mainstay of treatment when possible. Adjuvant therapies have not proven beneficial.
- Advanced disease is treated based on histology with chemotherapy, targeted therapies like pazopanib or trabectedin, and immunotherapy showing some promise particularly for liposar
A sentinel lymph node is the first lymph node that cancer is likely to spread to from a primary tumor. A sentinel lymph node biopsy identifies, removes, and examines this lymph node to determine if cancer cells are present. If cancer is found, it indicates the cancer may have spread to other lymph nodes or organs. Examining the sentinel lymph node helps determine the cancer stage and guides treatment planning. The procedure also reduces potential side effects of full lymph node surgery like lymphedema. Sentinel lymph node biopsies are used for cancers like breast cancer, melanoma, and others.
This document provides information on lymph node levels and classification of thyroid neoplasms. It describes the six levels of cervical lymph nodes and discusses papillary carcinoma and follicular carcinoma of the thyroid in detail. For papillary carcinoma, it covers presentation, histology, prognosis, treatment including surgery and radioactive iodine therapy. For follicular carcinoma, it discusses presentation, spread, histology and treatment. It also briefly summarizes other malignant thyroid tumors including medullary carcinoma, anaplastic carcinoma and thyroid lymphoma.
Primitive neuroectodermal tumor (PNET) is a highly malignant tumor composed of small round cells of neuroectodermal origin that affects soft tissue and bone. PNETs are classified into groups depending on location, with peripheral PNET (pPNET) occurring in soft tissue and bone outside the central nervous system. pPNET includes Ewing sarcoma and Askin tumor. Diagnosis involves ruling out other small round cell tumors through molecular cytogenetic studies showing translocation between chromosomes 11 and 22. PNET most commonly presents in adolescents and young adults with pain, swelling, and mass effect. Prognosis depends on tumor site, volume, and presence of metastasis. Treatment involves complete surgical resection when possible along with
This document provides an overview of thyroid cancer, including:
1. It describes the anatomy of the thyroid gland and risk factors for thyroid cancer such as radiation exposure and family history.
2. Papillary thyroid cancer is the most common type, and the document outlines the classification and presentation of thyroid cancers.
3. Diagnosis involves laboratory tests, ultrasound, and biopsy, while staging uses the TNM system.
4. Treatment typically involves surgery followed by radioactive iodine therapy or radiotherapy, with chemotherapy for advanced cases.
5. Prognosis depends on factors like histology, size, and spread, and follow up involves monitoring blood work and imaging tests.
Multiparametric (mp) mri of prostate cancerElsayed Salih
Multiparametric (mp) MRI combines anatomical T2-weighted imaging with functional techniques such as diffusion-weighted imaging (DWI), dynamic contrast-enhanced (DCE) imaging, and magnetic resonance spectroscopy (MRS) to improve prostate cancer detection and localization. T2-weighted imaging provides detail on zonal anatomy but has limited specificity for cancer. DWI and DCE help identify cancers as regions with restricted diffusion and early contrast enhancement respectively. The PI-RADS scoring system grades lesions on a scale of 1 to 5 based on findings from mpMRI. MpMRI can help guide biopsy or focal therapy of index lesions and select patients for active surveillance.
The document discusses the systematic approach to characterizing brain tumors on MRI. It describes three main steps: detection, localization, and characterization. Localization involves determining if a tumor is intra-axial or extra-axial based on signs like a CSF cleft between the brain and lesion. Characterization includes assessing features like enhancement pattern, border definition, and presence of necrosis to differentiate tumor types such as meningioma, schwannoma, glioma, and metastasis. The references provided give further information on diagnostic criteria.
This document provides information on various types of brain tumors classified by their cell of origin and grade. It discusses oligodendrogliomas, anaplastic oligodendrogliomas, and their typical imaging and clinical presentation. It also covers ependymomas, subependymomas, choroid plexus tumors, and other neuroepithelial tumors such as astroblastomas. Finally, it summarizes neuronal and glioneuronal tumors like gangliogliomas which are a common cause of tumor-related temporal lobe epilepsy.
1. Neuroendocrine tumors (NETs) arise from neuroendocrine cells throughout the body and share features like secretory granules and hormone production. Pancreatic NETs (PNETs) comprise 1-2% of pancreatic tumors.
2. PNETs can be functional, producing symptoms from hormone hypersecretion, or nonfunctional. Major functional types are insulinomas, gastrinomas, VIPomas, and glucagonomas. Nonfunctional PNETs are usually larger and have worse prognosis than functional tumors.
3. Treatment involves surgical resection for localized disease. For advanced or metastatic disease, options include somatostatin analogs, hepatic artery embolization, targeted drugs, and
I LOVE NEUROSURGERY INITIATIVE: INTRACRANIAL TUMORS.pptwalid maani
This document discusses intracranial tumors, including:
- Their incidence rates, with primary brain tumors occurring in 6 per 100,000 people and metastatic tumors in 30 per 100,000 people.
- Common tumor types like astrocytomas, oligodendrogliomas, ependymomas, medulloblastomas, meningiomas, and pituitary tumors.
- Risk factors, clinical presentation, investigations including CT, MRI, PET and angiography, pathology classification, and management approaches like surgery, radiation and chemotherapy.
This presentation reviews the current neurosurgical management of patients with medulloblastoma, including the data on molecular subtyping; uses “medulloblastoma” as a springboard to discuss other topics / tumor cell biology in general; and formulates research questions to further advance neurosurgical basic science.
This document discusses several types of childhood solid tumors, including central nervous system (CNS) tumors and neuroblastoma. It provides information on:
1) CNS tumors are the second most common malignancy in childhood, with astrocytomas making up 40% of cases. The most common astrocytoma is juvenile pilocytic astrocytoma.
2) Neuroblastoma is the most common extracranial solid tumor in childhood, arising from the sympathetic nervous system. It typically presents before 5 years of age and stages range from localized to widespread metastasis.
3) Treatment approaches for neuroblastoma and CNS tumors involve multimodal therapy including surgery, chemotherapy, and sometimes radiation
General Basic knowledge of Brain tumour explained in brief of classification, pathogenesis, clinical features, CT, MRI, management, Radiotherapy. Best for MBBS and PG preparation student.
Dr. Sharmin Nahar and Dr. Olivia Akhter are presenting a seminar on pediatric hematology and oncology at BSMMU. They discuss the case of a 2-year-old girl admitted with headaches, vomiting, and seizures for the past month as well as left-sided weakness. Imaging shows a mass in the 4th ventricle causing hydrocephalus, possibly an ependymoma or medulloblastoma. They then provide an introduction to brain tumors in children, discussing types, incidence, risk factors, classification, and clinical features. Treatment options for brain tumors including surgery, radiation, and chemotherapy are also summarized.
1) Medulloblastoma is the most common malignant brain tumor in children. It arises in the cerebellum and has a tendency to metastasize through the CSF pathways.
2) It is classified into molecular subgroups - WNT, SHH, Group 3, and Group 4 - which have different characteristics and predict survival outcomes.
3) Treatment involves maximal safe surgical resection followed by craniospinal radiation and chemotherapy based on risk stratification into standard-risk and high-risk groups. Modified radiation schedules are being studied to reduce long-term side effects.
O artigo fala sobre a reabilitação em pacientes com tumores cerebrais sob uma visão multidisciplinar, visando a funcionalidade e tratamento das sequelas.
Intramedullary spinal cord tumor is the rare condition demanding high index of suspicion in diagnosis and high yield surgical expertise to produce good outcome.
This document discusses neuroblastoma and nephroblastoma (Wilms tumor). Neuroblastoma is the most common extracranial solid tumor in children, arising from the sympathetic nervous system. It presents heterogeneously from spontaneous regression to aggressive forms. The causes are largely unknown. Nephroblastoma (Wilms tumor) is the most common malignant renal tumor of childhood. Both tumors are diagnosed through imaging and urine/blood tests. Prognosis and treatment varies depending on tumor histology and staging. Aggressive forms of neuroblastoma and anaplastic Wilms tumor remain difficult to treat.
The document discusses several types of tumors that can occur in the head and neck region of children. Lymphoma, rhabdomyosarcoma, medullary carcinoma of the thyroid, and neuroblastoma are some of the tumors mentioned. For lymphoma, the most common presentation is cervical lymphadenopathy, while rhabdomyosarcoma often presents with pain and swelling in locations like the orbit or paranasal sinuses. Diagnosis involves biopsy along with imaging and lab tests. Treatment depends on the specific tumor but may involve chemotherapy, radiation, and surgery. All childhood cancer cases should be referred to a specialist center.
PINEAL REGION TUMORS DIAGNOSIS & SURGICAL APPROACHES.pptxMedhatMoustafa3
Anatomy and related vascular structures of pineal region.pathological classification and incidence. Clinical Presentations and different diagnostics modalities. Different surgical approaches for pineal region
Neuroblastoma is the most common extracranial solid tumor in children, arising from neural crest cells. It often presents with metastases at diagnosis. Treatment involves surgery, chemotherapy, radiation, stem cell transplant, and immunotherapy depending on risk factors like age, stage, genetics. Prognosis depends on stage, MYCN amplification, DNA ploidy, with stage 4 and amplified MYCN indicating poorer outcomes. Multimodal therapy has improved survival rates.
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.
Brain and spinal cord tumors are the second most common cancers in children. They often present with non-specific symptoms, so diagnosis can be delayed. The most common tumor types are pilocytic astrocytomas and medulloblastoma in children aged 0-14, and pituitary/craniopharyngeal tumors and pilocytic astrocytomas in adolescents aged 15-19. Tumors are graded on a scale of I to IV based on malignancy. Treatment involves surgery along with radiation and chemotherapy depending on tumor type and grade. Prognosis depends on factors like extent of surgical resection and tumor location.
Neuroblastoma is the most common cancer in babies and the third-most common cancer in children after leukemia and brain cancer, proper diagnosis, treatment must be done in appropriate time. As it a fatal condition psychosocial support is most important for patient and family.
Neuroblastoma is a cancer of the sympathetic nervous system that most commonly affects infants and young children. It ranges in severity from tumors that spontaneously regress to very aggressive cases. Treatment involves surgery, chemotherapy, radiation, and stem cell transplants. Outcomes depend on risk factors like age and tumor stage, with low-risk cases having over 90% survival and high-risk cases having 25-35% long-term survival with intensive multimodal therapy. Stage 4S neuroblastoma in infants has an excellent prognosis often without treatment beyond symptom relief.
This document provides information on neuroblastoma and kidney tumors in pediatric patients. It discusses the epidemiology, risk factors, clinical presentation, diagnostic evaluation, staging, and prognostic markers of neuroblastoma. Key points include:
- Neuroblastoma is a common extracranial tumor in children and often arises in the adrenal medulla.
- Presentation varies depending on location and extent of disease but may include abdominal mass or pain.
- Diagnostic workup involves tumor biopsy, imaging, and urine or serum catecholamine levels.
- The INRG staging system incorporates image-defined risk factors to classify tumors and predict resectability.
- Prognostic markers like age, MYCN amplification
The document summarizes updates to the 2020 WHO classification of soft tissue tumours. Key changes include more precise definitions of categories through integration of morphology, immunohistochemistry, and molecular genetics. Rare subtypes are challenging to diagnose due to low incidence. The classification aims to support more rational therapeutic approaches through involvement of sarcoma experts and definition of clinicopathological categories. Major changes were made to adipocyte, fibroblastic/myofibroblastic, vascular, pericytic, smooth muscle tumour classifications and new entities were introduced.
Meningeal hemangiopericytoma is an aggressive brain tumor that originates from meningeal cells. While sometimes misdiagnosed as meningioma, it is distinct in that it can metastasize outside the brain. The document discusses the clinical, radiographic, and pathological features of meningeal hemangiopericytoma. Treatment involves surgical resection along with radiation and chemotherapy, but recurrence and metastasis remain high. Prognosis is generally poor with 5-year survival rates around 60%.
Similar to Primitive Neuroectodermal Tumor.pptx (20)
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2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. Chapter 3, Cardiology Explained, https://www.ncbi.nlm.nih.gov/books/NBK2214/
7. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
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4. Objectives
Identify the etiology of primitive
neuroectodermal tumor medical conditions and
emergencies.
Outline the evaluation of primitive
neuroectodermal tumor
Review the management options
5. Background
Primitive neuroectodermal tumors (PNET) are
neoplasms of which medulloblastoma is the
prototype. These are small cell, malignant
embryonal tumors showing divergent
differentiation of variable degree along
neuronal, glial, or rarely mesenchymal lines.
6. Background
The most recent WHO categorization of embryonal
tumors is as follows:
• Medulloblastoma
• CNS primitive neuroectodermal tumor (PNET):
◦ CNS neuroblastoma
◦ CNS ganglioneuroblastoma
◦ Medulloepithelioma
◦ Ependymoblastoma
• Atypical teratoid/rhabdoid tumor
7. Introduction
Primitive Neuroectodermal Tumors (PNETS) of
the central nervous system (CNS-PNETs) are
identified as highly aggressive large tumors that
are found in the brain and spine
8. Introduction
CNS PNETs can be distinguished from PNETs
occurring outside the central nervous system
(referred to as peripheral PNETs).
9. Introduction
PNET of the CNS can be divided grossly into
infratentorial tumors (medulloblastoma or
iPNET) and supratentorial tumors (sPNET).
10. Pathophysiology
Considerable controversy exists regarding the
histogenesis of these tumors. Initially, these
dense, cellular, embryonal tumors were thought
to have a common origin from primitive
neuroectodermal cells and to differ only in their
location, type, and degree of differentiation
11. Pathophysiology
In the revised World Health Organization (WHO)
classification, however, many of these tumors
are given a separate niche on the basis of the
assumption that these embryonal tumors also
could arise from cells already committed to
differentiation
12. Pathophysiology
In 2016, the World Health Organization (WHO)
published a revised classification of central
nervous system (CNS) tumors using molecular
parameters
13. Pathophysiology
In this classification, some tumors previously
recognized in the 2007 classification had been
renamed or eliminated
The primitive neuroectodermal tumor is no
longer recognized as such and those tumors are
now under the classification of embryonal
tumors
14. Pathophysiology
CNS embryonal tumors are now classified
using specific genetic/molecular characteristics
Medulloblastomas are the most common
embryonal tumors and have their own
genetic/molecular defined groups
15. Pathophysiology
addition to their histologically defined groups
(classic, desmoplastic/nodular, medulloblastoma
with extensive nodularity, and large
cell/anaplastic).
A combination of the genetic profile and the
histology determines the prognosis of these
tumors
16. Epidemiology
Primary CNS tumors are the second most
common tumor in children and adolescents
after leukemia
Approximately 20% of pediatric brain tumors
are CNS embryonal tumors
17. Epidemiology
This number includes all the medulloblastomas
and all other embryonal tumors
Embryonal tumors are the most common CNS
tumor in children aged 0–4 years (13.1%), and
the fifth most common in children and
adolescents age 0 to 19 years (10.1%)
18. Epidemiology
The CNS embryonal tumors have a preference
for children below the age of 4 and are more
common in females
Supratentorial embryonal tumors are found in
older children with a mean age of 8.4 years,
with a 2.3:1 female to male predominance
19. Histopathology
All embryonal tumors are classified as WHO IV
The genetic/molecular analysis of each tumor is
essential
The histopathological changes are still important
for the initial recognition of the tumor and the
intraoperative consultation.
Immunohistochemical staining shows specific
characteristics in each tumor
20. Histologic Findings
Primitive cells are observed growing in sheets or
cords of dense cellularity with increased mitotic
index and increased nuclear-cytoplasmic ratio
21. Histologic Findings
Formation of Homer-Wright rosettes (ie,
neuroblastic rosettes consisting of tumor cell
nuclei disposed in a circular fashion about
tangled cytoplasmic processes) is typical but not
always seen and is not essential for diagnosis.
When present, it is frequently associated with
marked nuclear pleomorphism and high mitotic
activity
22. Histologic Findings
Associated gross pathologic findings may include
cystic changes, although the tumors are usually
solid. They may vary from soft to firm in
consistency. Geographic areas of necrosis,
vascular proliferation, or calcification are less
common, while hemorrhage is rare
23. Histologic Findings
Immunohistochemical markers can confirm
differentiation toward astrocytic or neuronal
lineage.
Unusual variants include those with melanin
deposition, rhabdomyoblastic differentiation, or
desmoplastic features, among others.
24. History and Physical
The location of the tumor, supratentorial or
infratentorial, is important for the manifestation
of symptoms.
25. History and Physical
Those with an infratentorial location usually
develop hydrocephalus with headache,
vomiting, irritability, and lethargy. Ataxia or
other cerebellar signs and cranial nerve palsies
are common.
They rarely have seizures
26. History and Physical
In supratentorial locations, vomiting, seizures,
and headaches are common. Hemiparesis is
present if the tumor affects the cortical motor
areas or the descending tracts
27. History and Physical
The presentation is also affected by age.
Younger patients present irritability, vomiting,
and visual problems.
Those older than three years usually show
headaches, vomiting, and ataxia
28. History and Physical
These aggressive tumors have a short
prediagnosis interval between the first
symptoms and the radiological diagnosis, with a
median of 20 days.
Infratentorial tumors, high-grade tumors, and
those in younger patients have the shortest
intervals.
29. Causes
Isolated PNET is sporadic in nature, and only 14
familial cases have been reported in the
literature.
Loss of the short arm of chromosome 17
(17p13.3) is the most frequent abnormality
(particularly with
medulloblastoma, in which it is found in 30-40%
of cases),
30. Causes
Studies on molecular characterization have
identified 4-6 subgroups of medulloblastoma on
the basis of molecular differences
31. Causes
The most current international consensus
recognizes 4 core medulloblastoma subgroups
namely, SHH, WNT, Group 3, and Group 4.
This is adopted based on the knowledge of
genomic complexity of medulloblastoma as
analyzed by recent high-throughput genomic
technology
32. Causes
Karyotypically, almost all PNETs are abnormal.
Certain conditions have increased associations
with PNETs
They include the following
Gorlin syndrome,
Turcot syndrome
Li-Fraumeni syndrome
34. MRI
MRI is the imaging technique of choice. The
typical tumor is a heterogeneous mass with ill-
defined margins
arising from the vermis, which fills the fourth
ventricle.
Typical findings include moderate to intense
enhancement of the tumor, which is not
homogenous
35. MRI
Some tumors can show areas with blood
products, microcalcifications, and necrotic-cystic
components
They have restricted diffusion due to the high
cellularity of the tumor. These characteristics are
similar to high-grade gliomas, making molecular
diagnosis very important
36. MRI
Magnetic resonance spectroscopy shows a
choline peak with reduced N-acetyl-aspartate
and a high ratio of choline/aspartate.
Spinal MRI is usually required for the detection
of seeding and prognosis
39. MRI
The entire neuraxis should be imaged to detect
spinal metastases, which may occur via
subarachnoid dissemination
40. CT scan
In emergent situations, CT scan is preferred over
MRI because of its easy accessibility. However,
CT scan resolution is inferior to that of MRI. The
mass is typically midline, relatively
heterogeneous, and variably contrast enhancing
41. CT scan
Cerebellar medulloblastoma.
This axial view CT scan with
contrast shows a partially
enhancing mass arising in the
midline from cerebellum and
filling the fourth ventricle.
42. Treatment
The current most effective therapy in these
tumors is triple therapy, which is surgical
resection plus radiation and chemotherapy
43. Treatment / Management
Gross total resection is always attempted as it
provides better outcomes
For persistent lesions, second-look surgery is
recommended to remove residual tumor
44. Treatment / Management
Available studies have failed to show a
significant advantage, in terms of event-free
survival, of total resection as compared to near-
total and less-aggressive resections.
.
45. Treatment / Management
Craniospinal radiation is usually given due to the
high incidence of distant leptomeningeal
metastases and spinal seeding.
46. Treatment / Management
Permanent CSF diversion in the form of
ventriculoperitoneal shunt is required in as
many as 30% of these cases
47. Treatment / Management
Chemotherapy varies with each protocol, but a
combination of vincristine, cisplatinum,
cyclophosphamide, etoposide is common
Myeloablative chemotherapy has been used in
some cases, followed by hematogenic stem cell
rescue.
48. Treatment / Management
Ongoing worldwide research has explored
nonconventional therapeutic strategies such as
immunotherapy and gene therapy to improve
outcome and survival, although their clinical
efficacy is yet to be established
49. Treatment / Management
Moreover, there is growing interest in proton
therapy as a potential replacement for photon
therapy, while high-dose chemotherapy and
autologous stem cell rescue may improve
therapeutic efficacies
50. Prognosis
The following factors worsen the prognosis:
Presence of metastases at diagnosis
Infiltrative nature, evidence of glial
differentiation, and presence of TP53 mutation
Recent genomic study reveals that cases in the
WNT group showed a slightly better survival
with more favorable prognosis than those in the
SHH or non-WNT/SHH group
51. Prognosis
Unfavorable location that prevents complete
resection: Failure at the primary site continues
to be the predominant barrier to cure in
patients with medulloblastoma.
52. Prognosis
Younger age at presentation: Age older than 4
years at the time of initial diagnosis is associated
with more favorable prognosis than age younger
than 4 years.
53. Prognosis
In recent series of low-risk cases, the 5-year
survival rate has been reported to be 60-80% (or
even higher).
Many tumors relapse at a period equal to the
age at diagnosis plus 9 months (the Collin law
54. Complications
These tumors impose a severe burden on the
patient, and many significant complications
occur as a consequence of the tumor and the
triple therapy received.
55. Complications
Surgery is challenging and sometimes tricky.
Radiation and chemotherapy contribute to
substantial morbidity due to the ionizing
radiation's effects and the adverse effects of the
chemotherapeutic agents.