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Lymphadenopathy approach

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Approach from the medical point of view

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Lymphadenopathy approach

  1. 1. LYMPHADENOPATHY - APPROACH By : dr. / SAHAR H. MOSTAFA CONSULTANT OF INTERNAL MEDICINE EL-MATARIA TEACHING HOSPITAL - CAIRO OCTOBER, 2016
  2. 2. INTENDED LEARNING OUTCOME Define Lymphadenopathy.. Differentiate between Generalized and Localized Lymphadenopathy and Recognize their main Causes.. Understand the role of Internist in Mapping of the condition for a better symptom-directed diagnostic workup.. Management and/or Referral to the Oncologist at the proper time..
  3. 3. Introduction  The lymphatic system is the part of the immune system comprising a network of conduits called lymphatic vessels that carry a clear fluid called lymph (from Latin lympha "water") in a unidirectional pathway.  The widely and extensively dispersed vessel system collects tissue fluids from all regions of the body to eventually convey them towards the heart.  The components of the lymphatic system are :- I. Lymph, the recovered fluid II. Lymphatic vessels, which transport the lymph III. Lymphatic tissue, composed of aggregates of lymphocytes and macrophages that populate many organs of the body; and IV. Lymphatic organs, in which these cells are especially concentrated and which are set off from surrounding organs by connective tissue capsules
  4. 4. DEFINITION Lymphadenopathy: refers to lymph nodes that are abnormal in:  Size  Number  Consistency Whether as a result of normal reactive process or pathology (Abnormalities may be localized or generalized) -------------------------------------------------------------------------------------  Generalized lymphadenopathy is defined as: - enlargement of ≥ 2 non-contiguous lymph node groups  Regional lymphadenopathy If :  It involves enlargement of a single node or multiple contiguous nodal regions
  5. 5. Clinical understanding  LAD may be an incidental finding in patients being examined for various reasons, or it may be a presenting sign or symptom of the patient's illness  Commonly palpable and accessible lymph nodes are the cervical, axillary, and inguinal  Lymph nodes are common sites of metastatic cancer because cancer cells from almost any organ can break loose, enter the lymphatic capillaries, and lodge in the nodes  Soft, flat, submandibular nodes (<1 cm) are often palpable in healthy children  Healthy adults may have palpable inguinal nodes of up to 2 cm
  6. 6. The Lymph  Lymph is usually a clear, colorless fluid, similar to blood plasma but low in protein. Its composition varies substantially from place to place  Origin: Lymph originates in microscopic vessels called lymphatic capillaries. The gaps between lymphatic endothelial cells are so large that bacteria and other cells can enter along with the fluid.  The overlapping edges of the endothelial cells act as valve-like flaps that can open and close. When tissue fluid pressure is high, it pushes the flaps inward (open) and fluid flows into the lymphatic capillary. When pressure is higher in the lymphatic capillary than in the tissue fluid, the flaps are pressed outward (closed)
  7. 7. Lymphatic Vessels
  8. 8. Lymphatic cells and Tissues  T lymphocytes (T cells): These are so-named because they develop for a time in the thymus and later depend on thymic hormones. There are several subclasses of T cells  B lymphocytes (B cells): These are named after an organ in birds (the bursa of Fabricius) in which they were first discovered. When activated, B cells differentiate into plasma cells, they produce circulating antibodies.  Macrophages: These cells, derived from blood monocytes, perform phagocytosis to foreign matter (antigens) and display the fragments to certain T cells, thus alerting the immune system to the presence of an enemy. Macrophages and other cells that do this are collectively called antigen- presenting cells (APCs)  Dendritic cells: These are APCs found in the epidermis, mucous membranes, and lymphatic organs. (In the skin, they are often called Langerhans cells)
  9. 9. Lymphatic Organs  Primary Lymphatic Organs :-  The red bone marrow  The thymus gland (Lymphocytes originate and mature in these organs) Secondary Lymphatic Organs:-  The spleen  The lymph nodes  Other organs, such as: the tonsils, Payer's patches, and the appendix, .. (All the secondary organs are the places where lymphocytes encounter and bind with antigens, after which they proliferate and become actively engaged cells)
  10. 10. Primary Lymphoid Organs Red bone marrow  It is the site of stem cells that are ever capable of dividing and producing blood cells  In a child, most bones have red bone marrow  In an adult, it is limited to the sternum, vertebrae, ribs, part of the pelvic girdle, and the proximal heads of the humerus and femur The thymus  It is a member of both the lymphatic and endocrine systems  It houses developing lymphocytes and secretes hormones that regulate their activity  It is located between the sternum and aortic arch in the superior mediastinum  It is very large in the fetus and grows slightly during childhood, when it is most active. After age 14, however, it begins to undergo involution (shrinkage) so that it is quite small in adults
  11. 11. Secondary Lymphoid Organs  All the secondary organs are the places where lymphocytes encounter and bind with antigens, after which they proliferate and become actively engaged cells  The secondary lymphatic organs are:  The spleen The lymph nodes Other organs, such as:  The tonsils  Peyer’s patches  The appendix
  12. 12. The spleen  It is the body’s largest lymphatic organ  Its parenchyma exhibits two types of tissues named for their appearance in fresh specimens (not in stained sections):  The red pulp, which consists of sinuses gorged with concentrated erythrocytes, and  The white pulp, which consists of lymphocytes and macrophages aggregated like sleeves along small branches of the splenic artery N.B.= A person can live without a spleen, but is somewhat more vulnerable to infections  Functions:  It produces blood cells in the fetus and may resume this role in adults in the event of extreme anemia  It monitors the blood for foreign antigens: Lymphocytes and macrophages of the white pulp are quick to detect foreign antigens in the blood and activate immune reactions  It also compensates for excessive blood volume by transferring plasma from the bloodstream into the lymphatic system
  13. 13. The lymph nodes  Lymph nodes are bean-shaped organs found in clusters along the distribution of lymph channels of the body  Every tissue supplied by blood vessels is supplied by lymphatic's except placenta and brain  There are over 800 lymph nodes in the body and around 300 are located in the head and neck  The superficial nodes are located in the subcutaneous connective tissue, and the deeper nodes lie beneath the fascia & muscles and within various body cavities  The superficial nodes are the gateways for assessing the health of the entire lymphatic system  The lymph node is a bottleneck that slows down lymph flow and allows time for cleansing it of foreign matter  On its way to the bloodstream, lymph flows through one lymph node after another and thus becomes quite thoroughly cleansed of most impurities
  14. 14. Structural anatomy of a lymph node  A lymph node is usually < 3 cm long, often with a hilum on one side  It is enclosed in a fibrous capsule with extensions (trabeculae) that incompletely divide the interior of the node into compartments.  The interior consists of a stroma of reticular C.T. and a parenchyma of lymphocytes and antigen-presenting cells(APCs)  The parenchyma is divided into an outer cortex and an inner medulla(near the hilum)  The cortex consists mainly of lymphatic nodules which when fighting a pathogen, they acquire light-staining germinal centers where B cells multiply and differentiate into plasma cells  The medulla consists largely of .cords composed of lymphocytes, plasma cells, macrophages, reticular cells, and reticular fibers ♥♥ The macrophages and reticular cells of the sinuses remove about 99% of the impurities before the lymph leaves the node
  15. 15. Common causes of generalized lymphadenopathy • EBV/CMV • AIDS /AIDS related complex • Toxoplasmosis • Secondary syphilis Infectious • ALL / CLL • Lymphoma Neoplasia • Serum Sickness • Drugs (Phenytoin) • SLE • Rheumatoid Arthritis Hyper- sensitivity • Hyperthyroidism • Lipid storage disease Metabolic
  16. 16. Generalized Lymphadenopathy
  17. 17. Common Causes of localized lymphadenopathy (Site Predilection) • Viral Conjunctivitis • Trachoma • Cat-scratch disease • Tularemia • Sarcoidosis Pre-auricular • Rubella • Scalp infection Post-auricular/ Occipital • Pharyngitis • EBV • Toxoplasmosis • Sarcoidosis Cervical • Pharyngitis/buccal cavity tumor • Nasopharyngeal tumor • Thyroid malignancy Submandibular
  18. 18. Common Causes of localized lymphadenopathy (Site Predilection) • Pulmonary / Mediastinal / Esophageal Malignancy • T.B. • Sarcoidosis • Toxoplasmosis Right supraclavicular • Intra-abdominal malignancy • RCC • Ovarian/Testicular /Prostate malignancy Left supraclavicular (Virchow’s) • Cancer Breast / Breast infection • Melanoma • Lymphoma • Ipsilateral upper limb infection / Reaction to immunization • Juvenile RA Axillary • Syphilis(bilateral) • Sarcoidosis • Infection(unilateral) • Leprosy • IMN • CLL/Lymphoma Epitrochlear
  19. 19. Common Causes of localized lymphadenopathy (Site Predilection) •Syphilis •Genital herpes • Lymphogranuloma venereum • Chancroid • Lower extremity/local infection • Lymphoma • Metastatic carcinoma from: rectum, genitalia or lower limb(melanoma) Inguinal • Lymphoma • Bronchogenic Carcinoma • T.B. • Sarcoidosis • Histiocytosis • Coccidiomycosis Hilar • Gut Adenocarcinoma • Hodgkin’s disease • T.B. • Lymphoma • Bladder carcinoma Abdominal • Lymphomas • Leukemias • Cat-Scratch disease • Metastasis • Sarcoidosis • Granulomas Any region
  20. 20. Localized lymphadenopathy Submandibular Cervical
  21. 21. Localized lymphadenopathy Castleman disease: Pre- and Post- Auricular LAD  Rare, Idiopathic  Localized/multicentric  Mimic lymphoma/HIV  Systemic symptoms, increased risk of infection
  22. 22. Localized lymphadenopathy Cat-Scratch LAD Kikuchi’s Disease(Histiocytic necrotizing lymphadenitis)
  23. 23. Localized lymphadenopathy Right Supraclavicular Left Supraclavicular
  24. 24. Localized lymphadenopathy Axillary Inguinal
  25. 25. Hilar lymphadenopathy
  26. 26. Clinical assessment and applied aspects I. History: Detailed personal/present/past- history II. General Examination: Review of ALL body systems III. Local (Physical) Examination: Inspection and Palpation IV. Investigations: Laboratory and Radiological V. Treatment
  27. 27. Historical Preview and Thorough Review of other body systems  The vast majority of cases of lymphadenopathy in children have infectious etiology.  Lymphadenopathy that has been present for < 2 weeks has a very low chance of representing a malignant condition  Lymphadenopathy that has been present for > 1 year and has been stable in size over the year, has a very low chance of being malignant (with exception of indolent NHL and low-grade Hodgkin lymphomas)  Presence of fever points toward a broad differential, mainly consisting of infection or lymphoma (Evening raise or Pel-Ebstein fever)
  28. 28. Historical Preview and Thorough Review of other body systems  The Exposure history as well as the Travel history may be considered as epidemiologic clues to diagnosis:  Exposure to Animals/Pets and biting insects:  Cat-scratch disease  Exposure to infectious contacts  Consuming Undercooked meat for possible Toxoplasmosis  Environmental exposure such as tobacco, alcohol, and ultraviolet radiation may raise suspicion for metastatic carcinoma of the internal organs, cancers of the head and neck, and skin malignancies  Occupational exposure to silicon or beryllium
  29. 29. Historical Preview and Thorough Review of other body systems  Sexual history is also important in determining potential sexually transmitted causes of inguinal and cervical lymphadenopathy; as: HIV, Syphilis, HBV, HSV, CMV  Blood Transfusion or recent transplant history: for possible infections as CMV and HIV  History of recent immunization  IV- Drug Users: for possible HIV, HBV, or endocarditis  Drug history:  Medications that may cause lymphadenopathy(such as phenytoin)  Others(such as cephalosporins, penicillins or sulfonamides) are more likely to cause a serum sickness-like syndrome with fever, arthralgia and rash in addition to lymphadenopathy  Immunosuppressive agents
  30. 30. Historical Preview and Thorough Review of other body systems  Constitutional symptoms such as: fever, malaise, fatigue, cachexia, unexplained loss of weight(>10% of body eight) and loss of appetite  Presence of petechiae in palate of a young, may preclude IMN  Presence of non-pitting edema with inguinal LAD may suggest filariasis  Arthralgia, muscle weakness, unusual rashes may indicate possibility of autoimmune diseases  Hemiparesis of the tongue can occur if the hypoglossal nerve is involved by affection of upper deep cervical L.N. group due to carcinoma(The tongue will deviate towards the side of the lesion when asked to protrude out)  Cases are not uncommon when patient may complain of compression symptoms as dyspnea & dysphagia due to pressure on trachea or esophagus by the enlarged lymph nodes  Patients with retroperitoneal node enlargement, may present with LL edema
  31. 31. Historical Preview and Thorough Review of other body systems  Coexistence of splenomegaly implies a systemic disorders or a hematological disorder as: (IMN, Lymphoma, acute or chronic leukemia, SLE, Sarcoidosis, Toxoplasmosis, or cat-scratch disease)  Symptoms associated with lymphadenopathy that should be considered red flag symptoms for malignancy include:  Fever, night sweats, and unexplained weight loss  A supraclavicular node  Hard and tender L.N. with a significant size or draining an area with a significant pathology  Matted or Fixed node(s)  Non-recessive node after 3 weeks period or after disappearance of fever
  32. 32. RED FLAGS IN LYMPHADENOPATHY 1. Fever, night sweats, and unexplained weight loss 2. A supraclavicular node 3. Hard and tender L.N. with a significant size or draining an area with a significant pathology 4. Matted or Fixed node(s) 5. Non-recessive node after 3 weeks period or after disappearance of fever
  33. 33. Clinical Considerations The normally palpable L.Ns. Are:  Submandibular  Axillary  Inguinal
  34. 34. Clinical Considerations  Is the palpable mass a L.N. ?  Acute or Chronic ?  Epidemiological clues ?  Site ? {Localized or Generalized}  Number ?  Size ?  Character ? {surface and consistency}  Discrete or Matted ?  Tenderness ?  Mobility ?  Attachment ? And Relation to adjacent muscle ?  Associated Systemic and/or Localizing symptoms or signs?
  35. 35. Local Examination Mapping Examination  The physical examination should be regionally directed by knowledge of the lymphatic drainage patterns  All the normal anatomic sites should be inspected for any obvious enlargements.  When lymphadenopathy is localized, the clinician should examine the region drained by the nodes for evidence of infection, lesions or tumors
  36. 36. Mapping of Different Nodes
  37. 37. Node Palpation *** Confirm that the palpable mass is indeed a L.N.. { NOT something else as: Thyroglossal cyst, Abscess, Branchial cyst, Enlarged parotid, ..}  Exposure of the patient:  Cervical: all head and neck to clavicles  Axillary: stripped to the waist  Inguinal: umbilicus to knee  Before performing palpation, ask the patient to identify painful areas so that you can examine those areas last  During the procedure, pay attention to their facial expression to assess for sign of discomfort  Technique: Use the pads of the index and middle finger to move the skin in circular motions over the underlying tissues in each area  For Serial Evaluation, documentation of “all” of the L.N. criteria is critical !!
  38. 38. Axillary Node Palpation  The central group: near the middle of the thoracic wall of the axilla  The lateral group: near the upper part of the humerus and is best demonstrated by having the patient’s arm elevated so that you can feel along the axillary vein.  With the patient’s arm still elevated, feel along beneath the lateral edge of the pectoralis major muscle for the pectoral group
  39. 39. Epitrochlear node palpation: Approximately 3 cm proximal to the medial humeral epicondyle, in the groove between the biceps and triceps brachii. Best approached in an anterior to posterior direction
  40. 40. Inguinal node palpation horizontal group: along the inguinal ligament(both above and over) vertical group: beside great saphenous vein in the proximal thigh iliac nodes: above and deep to inguinal ligament
  41. 41. Local examination You Have To Answer The Previous Questions of Clinical Considerations .. ►►► Note for: Number: (single or multiple), (localized or generalized) Site: Anatomic location can narrow the D.D.  T.B. and Hodgkin’s ----- > cervical (earlier stages)  Cat-scratch disease ----- > cervical and axillary  IMN --- > cervical  Sexually-transmitted diseases ----- > Inguinal  Supraclavicular ----- > Highest risk of malignancy(90% in old patients)  Paraumbilical (Sister Mary Joseph's)----- > Abdominal or pelvic neoplasm Size (up to 1 cm is considered normal).. Except epitrochlear :if >0.5cm N.B.=The size is usually of little importance in adding information to establish diagnosis; however increase in size on serial examination may be of value..
  42. 42. Local examination  Surface and Consistency (Soft, hard, firm, rubbery, fluctuant, shotty, or variable)  Stony-hard nodes are typically a sign of cancer, usually metastatic  Firm, rubbery nodes suggest lymphoma  Softer nodes are the result of infections or inflammatory conditions  Suppurant nodes may be fluctuant  The term “shotty” refers to small nodes that feel like buckshot under the skin, as found in the cervical nodes of children with viral illnesses  Discrete or Matted(nodes that feel connected and seem to move as a unit) N.B.=Nodes that are matted can be either benign (T.B., Sarcoidosis, lymphogranuloma venereum), or malignant (metastatic carcinoma or lymphomas).  Painless or Painful(when a lymph node increases in size its capsule stretches and causes pain, or when there is hemorrhage into the necrotic center of a malignant node) N.B.=The presence or absence of tenderness does not necessarily differentiate benign from malignant nodes..
  43. 43. Local examination  Fixed or not to the underlying skin, deep fascia or muscles The patient is asked to contract the muscles against resistance:  If the swelling becomes MORE apparent it is SUPERFICIAL to muscles  If the swelling becomes LESS apparent it is DEEP to muscles  If the swelling is NOT affected it is IN the muscle  The overlying skin has to be noted:  Skin redness, edema and brawny induration denote acute lymphadenitis  Skin over tuberculous lymphadenitis becomes red and glossy when they reach the point of bursting  Scar often indicates previous bursting of abscess or operation  Skin may appear tense and stretched with dilated subcutaneous veins when overlying a rapidly growing lymphoma  In secondary carcinoma, the skin may become fixed
  44. 44. Investigations  The investigation of lymphadenopathy can be organized according to where nodes occur and type of clinical symptoms present  Most lymphadenopathy patients do not require a biopsy and at least half require no laboratory study ********************************************************************
  45. 45. Investigations It includes: I - Laboratory II - Radiological III - Others (as: Bronchoscopy, Mediastinoscopy or Bone Marrow Biopsy) IV - Node Biopsy
  46. 46. Investigations I - Laboratory: The laboratory investigation of patients with lymphadenopathy must be tailored to elucidate the etiology suspected from the patient's history and physical findings  CBC with differential count : provides useful data for the diagnosis of:  Acute or Chronic leukemia's  EBV or CMV mononucleosis(atypical lymphocytosis)  Pyogenic infections  Lymphoma with a leukemic component  Immune cytopenias (in illnesses such as SLE)  ESR  Serology: may demonstrate:  Antibodies specific to: components of EBV(viral Capsid Ag), CMV, HIV, Toxoplasma, Brucella, etc  PCR-for: CMV-DNA, T.B.  ANA/Anti-ds DNA antibody (SLE)  Others: In cases of hilar LAD, do:  Serum ACE  Tuberculin T.
  47. 47. Investigations II - Radiological: They include: 1. Chest X-Ray (CXR) 2. Node Ultrasonography (U/S) / Color Doppler U/S 3. Abdominal: U/S and CT 4. Throat culture/urethral or cervical swab for regional affection 5. Magnetic Resonance Imaging scans(MRI) 6. Positron Emission Tomography scans(PET)
  48. 48. Investigations 1 – CXR:  To assess for mediastinal disease, Hilar nodes, or for Parenchymal lung disease (Pulmonary infiltrate)  Mediastinal LAD would suggest:  T.B.  Histoplasmosis,  Sarcoidosis  Lymphoma  Primary/metastatic lung cancer
  49. 49. Investigations 2 – Nodal U / S and Color Doppler U/S:  A lymph node measuring ≥ 10 mm in the short axis is defined as malignant  A lymph node with a L/S ratio of ≥ 3.5 is considered reactive or benign  A lymph node with a L/S ratio of ≤ 1.6 is considered metastatic  A lymph node which can not be fitted to the previous categories is considered to be “questionable”  Malignant infiltration alters the U/S features of the lymph nodes, resulting in enlarged nodes that are usually rounded, with definite “internal echoes” and showing peripheral and mixed vascularity ♥♥♥Using these features, U/S has been shown to have an accuracy of 89%– 94% in differentiating malignant from benign cervical L.Ns.
  50. 50. Normal cervical nodes appear sonographically as somewhat flattened, cigar-shape, hypo-echoic structures with varying amounts of Hilar fat
  51. 51. Ultrasonography Differentiation Benign (No definite internal echoes) Malignant (Definite internal echoes)
  52. 52. Investigations 3 – Contrast Enhanced CT(CECT): For the reveal of: mediastinal, retroperitoneal, iliac or mesenteric nodal affection 4 – MRI:  T1-weighted images depict lymph nodes as being of intermediate signal intensity (similar to muscle)  T2-weighted images show them as hyper-intense signal
  53. 53. MRI – Sagittal scan of a large pathological deep cervical L.N. T1 - Weighted T2 - Weighted
  54. 54. Investigations 4 - PET:  Most head and neck PET imaging is performed with the radio- labeled glucose analogue FDG Fluoro-Deoxy-Glucose which has increased uptake in viable malignant tumor due to enhanced glycolysis  The result can be expressed as a standardized uptake value (SUV), with those values > 2 being considered abnormal  PET scanning provides functional rather than anatomical imaging
  55. 55. Investigations III – Node Biopsy: Node Excision Biopsy:  It is a valuable diagnostic tool  It could be performed directly or via radiological interventional methods or via surgery or endoscopy  Its accuracy not only on the experience of the clinician, but also on the cytologist who reports it  Node should be subjected to the minimal of trauma during removal, or it may be difficult for interpretation
  56. 56. Investigations  Proper choice of node: Choose the LARGEST node Avoid axillary(which can show fatty involution) and inguinal nodes(which can show scaring due to repeated infections) Supraclavicular nodes have the highest diagnostic yield
  57. 57. Investigations  The decision to biopsy may be made:  Early in a patient's evaluation, or  Delayed for up to 2 weeks N.B.-- PROMPT biopsy should be performed if the patient's history and physical findings suggest a MALIGNANCY:  If a solitary, hard, non-tender cervical node is found in an older patient who is a chronic user of tobacco, or  If a supraclavicular adenopathy is present, or  If there is generalized adenopathy that is firm, movable, and suggestive of lymphoma
  58. 58. FNAC/B: should not be performed as the first diagnostic procedure As most diagnoses require more tissue, thus it often delays a definitive diagnosis.. FNAC/B: Cannot give information about gland architecture.. FNAC/B: should be reserved for thyroid nodules and for confirmation of relapse in patients whose primary diagnosis is known.. FINE NEEDLE ASPIRATION
  59. 59. Investigations  Imprints are useful, not only for showing the appearance of the cells in a cytological preparation but when stained by a Romamowsky method, for comparison with blood or bone marrow smears, but also for cytochemical or immunochemical studies  Scalene node biopsy often provides useful information about the nature of underlying lung disease  Abdominal nodes are commonly removed in the course of staging laparotomy operations and the sites of removal of such nodes may be indicated by small metal clips to enable subsequent abdominal X-ray films to be compared with preoperative / pre-treatment lymphangiogram
  60. 60. • Look at aspirated material • Smear for AFB • Smear for cytologyFNAC / B • Look at cut-surface • Fresh node for T.B. cuture • Fresh node for immuno phenotyping/cytochemistry • Smear for AFB • Node in formalin for histology Excision Biopsy
  61. 61. Treatment and Follow-up  Patients with unexplained localized lymphadenopathy and a reassuring clinical picture -------------> 2 – 4 week period of observation is appropriate before biopsy, for re-evaluation of node(s)-increase in size  Patients with localized lymphadenopathy and a worrisome clinical picture or patients with generalized lymphadenopathy -----------> further diagnostic evaluation that often includes Biopsy
  62. 62. Treatment and Follow-up  Antibiotics are given only if there is strong evidence of bacterial infection  DO NOT USE GLUCOCORTICOIDS, which might obscure some diagnosis (because of their lympholytic effect) or might delay healing/activate underlying infection.. (Except in life-threatening pharyngeal obstruction by enlarged lymph tissue in Waldeyer’s ring caused by EBV)
  63. 63. Self – Assessment Clinical Cases
  64. 64. ONE Question A 66-y-old man presents with poor appetite and general malaise. Physical examination reveals palpable L.N.s. The finding of L/N. in which of the following areas is most likely to be suggestive of malignancy? A. Cervical B. Supraclavicular C. Epitrochlear D. Axillary E. Inguinal
  65. 65. ONE ANSWER A 66-y-old man presents with poor appetite and general malaise. Physical examination reveals palpable L.N.s. The finding of L/N. in which of the following areas is most likely to be suggestive of malignancy? A. Cervical B. Supraclavicular C. Epitrochlear D. Axillary E. Inguinal
  66. 66. TWO QUESTION A 66-y-old man is referred for further investigation of an enlarged supraclavicular L.N. Which one of the following is the diagnostic technique of choice for evaluating LAD, if neoplasm is suspected? A. CT scan B. MRI C. Open biopsy D. FNA E. Incisional wedge biopsy
  67. 67. TWO ANSWER A 66-y-old man is referred for further investigation of an enlarged supraclavicular L.N. Which one of the following is the diagnostic technique of choice for evaluating LAD, if neoplasm is suspected? A. CT scan B. MRI C. Open biopsy D. FNA E. Incisional wedge biopsy
  68. 68. THREE QUESTION A 12-y-old girl presents with painful epitrochlear LAD associated with low grade fever and malaise. The pt. has a cat and she also gave a history of a papillary lesion in her left forearm about 1 Wk. – 10 Ds ago. The most likely etiologic agent in this situation is: A. Bartonella henselae B. Staph. aureus C. EBV D. Sporothrix schenkii E. Yersinia pestis
  69. 69. THREE ANSWER A 12-y-old girl presents with painful epitrochlear LAD associated with low grade fever and malaise. The pt. has a cat and she also gave a history of a papillary lesion in her left forearm about 1 Wk. – 10 Ds ago. The most likely etiologic agent in this situation is: A. Bartonella henselae B. Staph. aureus C. EBV D. Sporothrix schenkii E. Yersinia pestis
  70. 70. FOUR QUESTION A 59-y-old woman who has had Sjogren’s syndrome for 10 Ys, presents with enlarged Cervical L.Ns. Which one of the following is the most likely neoplasm responsible for this presentation? A. Gastric carcinoma B. Lymphoma C. Bronchial carcinoma D. CLL E. Pancreatic carcinoma
  71. 71. FOUR ANSWER A 59-y-old woman who has had Sjogren’s syndrome for 10 Ys, presents with enlarged Cervical L.Ns. Which one of the following is the most likely neoplasm responsible for this presentation? A. Gastric carcinoma B. Lymphoma C. Bronchial carcinoma D. CLL E. Pancreatic carcinoma
  72. 72. FIVE QUESTION A 69-y-old lifelong non-smoker is referred because of his abnormal blood tests: Hb=11.2, WBCs=86.400 (with 98% lymphocytes), PLTs=180.000. O/E: his R.R. is 16 breaths/min, with widespread non-tender LAD and 5 cm-hepatomegaly and a palapable spleen. Pulmonary function tests show a FVC of 80% of predicted value and FEV 1 of 84%. What is the most likely explanation for the abnormal pulmonary function tests? A. CHF B. Diffuse pulmonary lymphoma C. Lung fibrosis D. Pneumonia E. Sarcoidosis
  73. 73. FIVE ANSWER A 69-y-old lifelong non-smoker is referred because of his abnormal blood tests: Hb=11.2, WBCs=86.400 (with 98% lymphocytes), PLTs=180.000. O/E: his R.R. is 16 breaths/min, with widespread non-tender LAD and 5 cm-hepatomegaly and a palapable spleen. Pulmonary function tests show a FVC of 80% of predicted value and FEV 1 of 84%. What is the most likely explanation for the abnormal pulmonary function tests? A. CHF B. Diffuse pulmonary lymphoma C. Lung fibrosis D. Pneumonia E. Sarcoidosis
  74. 74. SIX QUESTION A 25-y-old woman presents with widespread LAD. She is taking no regular medications and past medical history is irrelevant. Investigations show: Hb=8, WBCs=42 000, lymphoblasts=64%, PLTs=210 000. Which of the following is the most likely underlying diagnosis? A. AML B. ALL C. Glandular fever D. Hodgkin’s disease E. Toxic shock syndrome
  75. 75. SIX ANSWER A 25-y-old woman presents with widespread LAD. She is taking no regular medications and past medical history is irrelevant. Investigations show: Hb=8, WBCs=42 000, lymphoblasts=64%, PLTs=210 000. Which of the following is the most likely underlying diagnosis? A. AML B. ALL C. Glandular fever D. Hodgkin’s disease E. Toxic shock syndrome
  76. 76. SEVEN QUESTION A 24-y-old man has noted for the last 2 Ms that his face is swollen in the morning. He has lost 10-Kg in weight over 6-Ms. He has no other complaints. O/E: The ext. jugular veins are dilated. CXR: shows a mediastinal mass. Which one of the following is the most likely diagnosis of his SVC obstruction? A. Adenocarcinoma of the lung B. Hodgkin’s disease C. Sarcoidosis D. Seminoma E. Tuberculosis
  77. 77. SEVEN ANSWER A 24-y-old man has noted for the last 2 Ms that his face is swollen in the morning. He has lost 10-Kg in weight over 6-Ms. He has no other complaints. O/E: The ext. jugular veins are dilated. CXR: shows a mediastinal mass. Which one of the following is the most likely diagnosis of his SVC obstruction? A. Adenocarcinoma of the lung B. Hodgkin’s disease C. Sarcoidosis D. Seminoma E. Tuberculosis

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