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67 Cards in this Set
- Front
- Back
Where in the lymph nodes are B-cells found?
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Germinal follicles
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Where in the body are T-cells found (2)?
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1) Paracortex of lymph nodes
2) Thymus |
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Where in the body are histiocytes found (2)?
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1) Subcapsular sinus of lymph nodes
2) Skin |
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What is another name for histiocytes?
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Langerhans cells
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At what age range is lymphadenopathy usually benign? Malignant?
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Benign <30 y/o
Malignant >30 y/o |
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What does painful lymphadenopathy usually indicate (2)?
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1) Infection
2) Autoimmune disease |
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What does painless lymphadenopathy usually indicate (2)?
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1) Metastasis
2) Primary malignant lymphoma |
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White asterisk: what region?
Solid arrow: what region? Dotted arrow: what region? |
White asterisk: germinal follicle
Solid arrow: paracortex Dotted arrow: subcapsular sinus |
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Metastasis to left supraclavicular lymph node. From where (2)?
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1) Stomach
2) Pancreatic carcinoma |
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Metastasis to hilar lymph nodes. From where (1)?
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1) Lung cancer
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Metastasis to para-aortic lymph node. From where (1)?
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1) Testicular cancer
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Follicular hyperplasia. Histologic appearance?
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Prominent germinal follicles
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Dermatopathic lymphadenitis such as in psoriasis. Histological appearance.
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Melanin pigmentation
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Cat-scratch disease. Cause?
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Bartonella henselae
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Toxoplasmosis. Cause? Clinical features?
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Toxoplasma gondii
Mononucleosis-like syndrome with painful cervical lymphadenopathy |
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Tularemia. Cause? Reservoir? Clinical feature?
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Francisella tularensis
Rabbits (zoonosis) Ulceroglandular lesions |
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Sinus histiocytosis in axillary lymph nodes of breast cancer patient. Good or bad?
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Good
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Non-Hodkin's lymphoma. Cell of origin?
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B-cell (>80%)
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What extranodal sites may non-Hodgkin's lymphoma arise from (3)?
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1) Stomach
2) CNS 3) Peyer's patch |
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Are non-Hodgkin's lymphoma common in children and adults?
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Most common malignant lymphoma in adults and children (~60%).
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What types of non-Hodgkin's lymphoma may EBV cause (2)?
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1) Burkitt's lymphoma
2) CNS lymphoma |
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What type of non-Hodgkin's lymphoma may H. pylori cause (1)?
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Malignant lymphoma of stomach
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Which autoimmune disorders are associated with non-Hodgkin lymphoma (2)?
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1) Sjogren's syndrome
2) Hashimoto's thyroiditis |
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Mycosis fungoides. What cell type is involved? What tissue is involved?
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CD4 Th cells
Skin |
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Lymph node section. What pattern is present? Diagnosis?
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Starry sky pattern with reactive histiocytes.
Burkitt's lymphoma |
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Diagnosis?
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Follicular lymphoma
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Sézary syndrome. What?
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Mycosis fungoides in leukemic phase.
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Nodular sclerosing Hodgkin Lymphoma. More common in men or women?
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Women
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What type of Hodgkin Lymphoma is EBV associated with?
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Mixed cellularity type.
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What is the classic neoplastic cell of Hodgkin Lymphoma? Immunophenotype?
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Reed-sternberg cell. CD15+, CD30+
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What is required for diagnosis of Hodgkin Lymphoma?
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Reed-sternberg cell
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What uncommon fever variant is associated with Hodgkin Lymphoma? Characteristics?
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Pel-Ebstein fever. Recurring bouts of fever followed by remissions.
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What is more important for the prognosis of Hodgkin Lymphoma, stage or type?
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Stage
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What lymph nodes are involved in nodular sclerosing Hodgkin Lymphoma (2).
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1) Mediastinal nodes
2) Either cervical or supraclavicular nodes |
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What secondary malignancies are patients with Hodgkin Lymphoma at increased risk for?
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Acute myelogenous leukemia (AML) or non-Hodgkin lymphoma (NHL)
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Diagnosis. (include type)
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Mixed-cellularity Hodgkin Lymphoma.
Notes: Reed-Sternberg cells, eosinophils, plasma cells |
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Diagnosis? (include type)
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Nodular-sclerosing Hodgkin's lymphoma
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Langerhans histiocytes. Distinguishing immunophenotype? Pathognomonic intracellular structure?
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CD1+
Birbeck granules |
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Malignant histiocytosis. What tissues commonly involved (2)?
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1) Skin
2) Lytic bone lesions |
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Hand-Schuller-Christian disease is a type of malignant histiocytosis. What is the classic triad?
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1) Lytic skull lesions
2) Diabetes insipidus 3) Exophthalmos |
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Eosinophilic granuloma. What? Clinical finding (1)?
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Benign histiocytosis
Unifocal lytic lesions in bone |
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Mast cell disease. Clinical signs and symptoms (3)?
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1) Pruritis
2) Swelling 3) Hyperpigmentation |
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What cell is this? Why?
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Histiocyte
Birbeck granules |
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Urticaria pigmentosum. Clinical findings (2)?
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1) Dermatographism
2) Regressed lesions remain hyperpigmented |
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Histology of Urticaria Pigmentosum?
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Mast cells containing metachromatic granules that stain positive with toluidine blue and Giemsa stain.
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Plasma cell dyscrasia. Finding on serum protein electrophoresis?
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Monoclonal spike, usually IgG.
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Bence Jones protein. What?
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Light chains (κ or λ) in urine.
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Biopsy revealed Giemsa positive cells. Diagnosis?
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Urticaria Pigmentosum
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What age group does multiple myeloma typically involve?
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>40 y/o
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What is the typical cellular progression of multiple myeloma?
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Normal plasma cell → monoclonal gammopathy of undetermined significance (MGUS) → myeloma
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Multiple myeloma. Classical bone findings (3)?
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1) Lytic lesions
2) Pathologic fractures 3) Hypercalcemia |
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Multiple myeloma. Classical renal findings include proteinaceous casts composed of what (2)?
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1) Bence Jones protein
2) Intratubular multinucleated giant cell reaction |
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Multiple myeloma. Common causes of death (2)?
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1) Renal failure
2) Sepsis |
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What is the most common monoclonal glomerulopathy?
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MGUS
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What cell type is present in the red pulp of the spleen (1)?
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Macrophages
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What cell types are present in the white pulp of the spleen (2)?
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1) B-cells
2) T-cells |
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What is the most common cause of splenomegaly in developing countries?
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Malaria
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Gaucher's disease. What is deficient and what is elevated?
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↓ glucocerebrosidase
↑ glucocerebroside |
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Niemann-Pick. What is deficient and what is elevated?
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↓ sphingomyelinase
↑ sphingomyelin |
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Massive splenomegaly. Common complications (4)?
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1) LUQ pain
2) Splenic infarctions 3) Friction rub 4) Left-sided pleural effusion |
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Splenomegaly in cirrhosis. Morphology?
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Thickened "sugar-coated" spleen
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Hypersplenism. Causes what?
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Destruction of hematopoietic cells causing peripheral blood cytopenia.
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Splenic dysfunction. Increased risk for what?
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Streptococcus pneumoniae sepsis
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Mechanisms for septicemia seen in splenic dysfunction (3)?
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1) ↓ IgM
2) ↓ tuftsin (increases macrophage phagocytic receptors) 3) ↓ splenic macrophages |
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This patient presented with proteinaceous tubular casts and lytic bone lesions. What malignant cell types are shown in this slide?
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Plasma cells.
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This patient presented with splenomegaly. This is a bone marrow biopsy. What is the diagnosis?
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Gaucher's disease
Notes: macrophage with fibrillary appearnae of cytoplasm |
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This patient presented with splenomegaly and a bone marrow biopsy was taken. What is the diagnosis?
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Niemann-Pick Disease
Notes: Soap bubble appearance of macrophage cytoplasm. |