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44 Cards in this Set
- Front
- Back
name five important components of lymphoreticuloendothelial system
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lymph nodes, thymus, spleen, tonsils and adenoids, Peyer patches
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in follicular hyperplasia of a lymph node which structures become prominent
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Gemrinal centers
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Burkitt lymphoma is caused by what virus?
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Epstein-Barr virus
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The greatest preponderance of non-Hodgkin lymphomas are of
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B-cell origin
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the two major histomorphologic patterns seen in follicular lymphomas
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small cells with irregular or cleaved nuclear contours and scant cytoplasm referred to as centrocytes and larger cells with open nuclear chromatin
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what are the four catagories of the real classification of lymphoid neoplasms
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precursor B-cell neoplasms, percursor t-cell neoplasms, peripheral B-cell neoplasms, Peripheral T-cell and natural killer cell neoplasms
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Burkitt lymphoma has a characterstic histologic appearance which is known as
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Starry sky pattern
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the distinctive tumor giant cell found in cases of Hodgkin disease is known as
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Reed Sternberg cell
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Reed Sternberg cells have histologic appearance of
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15-45 micormeters in diameter, binucleate or bilobed with the two halves often appearing as mirror images of each other
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Lacunar cell
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varient of Reed Sternberg cell with abudant pale cytoplasm with an empty nucleus
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Lacunar cell is most frquently encountered with
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Nodular Sclerosis type Hodkins disease
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name the four types of Hodgkins disease
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Nodular Sclerosis, Mixed cellularity, Lymphocyte predominance, Lymphocyte depletion
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the most common form of Hodgkin disease seen in young adults
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Nodular Sclerosis
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Name the three catagories of myeloid neoplasia
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actue mylogenous leukemia, Myelodysplastic syndromes, Chronic myeloproliferative disorders
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Acute mylogenous leukemia
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characterized by accumulation of immature myeloid cells in the bone marrow
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Myelodysplastic syndromes
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associated with ineffective hematopoiesis and assocaited cytopenias
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Chronic myeloproliferative disorders
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usually associated with an increased production of terminally differentiated myeloid cells
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what are the three major clinical conditions which give leukemias their ominous prognosis
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anemia-fatigue, neutropenia-fever, thrombocytopenia-spontaneous mucosal and cutaneous bleeding
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name the three types of white cells by which leukemias are subclassified
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myeloblasts, monoblasts, megakaryoblasts
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what is the most common form of leukemia in children
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Acute lymphoblastic leukemia
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what is the most common form of leukemia in adults over the age 60 in the western world
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Chronic lymphocytic leukemia
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myelodysplastic syndrome
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group of clonal stem cell disorders characterized by maturation defects resulting in ineffective hematopoiesis and an increased risk of transformation to AML
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the most common cytogenetic finding associated with CML
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translocation involving the BCR gene on chromosome 9 and the ABL gene on chromosome 22-Philadelphia chromosome
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the most common gross finding in the spleen in patients with Hodgkins disease is
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splenomegaly
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Multiple myeloma
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multiple tumorous masses of neoplastic plasma cells scattered throughout the skeletal system
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Waldenstrom macroglobulinemia
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syndrome stemming from serum-hyperviscosity caused by high levels of IgM
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Primiary or immunocyte-associated amyloidosis
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results from monoclonal proliferation of plasma cells secreting free light chains that are subsquently processed and depositied as amyloid
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Monoclonal gammopathy of undetermined significance
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instances in which M components are identified in the blood of patients having no symptoms or signs of any of the better characterized monoclonal gammopathies
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Heavy Chain disease
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seen in diverse group of disorders including CLL and SLL lymphoplasmcytic lymphoma and an unusual small bowel lymphoma occuring in malnourished populations
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the light chain proteins found in patients with plasma cell dyscrasias are known as
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Bence Jones Proteins
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Multiple myeloma most frequently involves which organ system
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Skeletal system
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radiologically the lesions seen in multiple myeloma are osteolytic or osteoblastic?
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Osteolytic
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name the three clinicopathologic entities of Langerhans cell histiocytosis
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acute disseminated Langerhans cell histiocytosis, unifocal and mutlifocal Langerhans cell histiocytosis, Hand Schuller Christian triad multifocal Langerhans cell histiocytosis
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describe the histologic components of eosinophilic granuloma
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histiocytes are variety admixed with eosinphils, lymphocytes, plasma cells and neutrophils
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describe the component parts of Hand Schuller Christian triad
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Calvarial defects, diabetes, insipidus, and exophtalmos
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white pulp
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forms periarterial sheaths of lymphoid cells around the arteries most abudant about the larger branches and progressively more attenuated as the arterial supply penetrated the splenic substance
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red pulp
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trasversed by numerous thin walled vascular sinusoids sperated by the splenic cords(cords of Billroth)
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name the four major functions of the spleen
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filtration of unwanted elements from the blood, major secondary organ in the immune system, source of lymphoreticular cells and sometimes hematopoeitic cells, reserve pool and storage site
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accessory spleens
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or Spleniculi are common findings
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describe the gross appearance of splenic infarcts
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infarcts are characteristically pale and wedge shaped with their bases at the periphery where the capsule is covered with fibrin
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name the two most commonm benign neoplasms of the spleen
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lymphangioma and hemangioma
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name the two types of cancer in which there is splenic involvement
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Leukemia and lymphoma
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at what age does thymic involution start
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puberty
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what are Hassal corpuscles
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epithelial cells in the thymus medulla have only scant cytoplasm devoid of interconnecting processes may be spindled with oval darkly staining nuclei
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