Pathology 3 Flashcards
Lymphoid or myeloid neoplasms with widespread involvement of BM. Tumor cells in peripheral blood.
Leukemia
Discrete tumor masses arising from LN.
Lymphoma
Acute inflammatory response to infection.
Leukemoid reaction, increased WBC count with left shunt and increase leukocyte ALP
Reed-Sternberg Cells
Hodgkin Lymphoma
Localized, single group of nodes; contiguous spread
Hodgkin Lymphoma
Bimodal Distribution
young adulthood and >55y/o
Hodgkin Lymphoma
Associated with EBV
Hodgkin Lymphoma
Most common subtype of Hodgkin Lymphoma
Nodular Sclerosis
Peak age for NHL
20-40
IgM heterophile Antibody (+)
Infectious Mononucleosis
Confirmatory test for Infectious mononucleosis
EBV viral Capsid Antigen
CD15+ and CD30+
Reed-Sternberg in HL
t(8;14)
translocation of c-myc and heavy-chain Ig
Burkitt Lymphoma
Starry Sky
sheets of lymphocytes with interspersed macrophages Burkitt Lymphoma (NHL)
Endemic Burkitt Lymphoma
Jaw Lesion
Sporadic Burkitt Lymphoma
Pelvis or Abdomen
t(14; 18)
Follicular Lymphoma (bcl-2 activation) Diffuse large B cell Lymphoma - most common NHL
t(11; 14)
Translocation of cyclin D1 and heavy chain Ig
Mantle cell lymphoma
CD5+
Lytic bone lesions, hypercalcemia, caused by HTLV-1
Adult T-cell Lymphoma
Lymphocytes with cerebriform nuclei
Mycosis fungiodes/ Sezary Syndrome
Pautrier microabscesses
Aggregates of neoplastic T cells in epidermis
Monoclonal Plasma Cell “fried egg appearance”
Mulitple Myeloma
Hypercalcemia, renal insufficiency, anemia, bone lytic lesions
Multiple Myeloma
Large amounts of IgG and IgA, most common primary tumor arising within bone in the elderly
Mutliple Myeloma
Bence Jones protein
Multiple Myeloma
Rouleaux Formation
RBCs stacked like poker chips, Multiple Myeloma
IgM spike with no lytic bone lesions
Waldenstrom macroglobulinemia
M-spike with no features of multiple myeloma, no lytic lesions, no hyper[Ca2+], no AL amyloid, no Bence-Jones Proteinuria
MGUS - monoclonal gammopathy of undetermined significance
High Serum IL-6
Multiple Myeloma because of increased plasma cells
neutrophils with bilobed nuclei typically seen after chemo
Pseudo-Pelger-Huet Anomaly
Cancer Associated with Down’s
Acute Lymphoblastic Leukemia/Lymphoma and AML
TdT+, CD10+, In children <15y/o
ALL (B-cell type)
Where ALL can spread to
CNS and testes
Cancer with mediastinal Thymic Mass
T-cell ALL
Smudge Cells
Chronic Lymphocytic Leukemia (CLL)
Neoplastic Proliferative of Naive B cells
Co-express CD5 and CD20
CLL
Mature B-cell tumor in elderly
Hairy Cell Leukemia
Stains TRAP (tartrate-resistant acid phosphatase)
Hairy Cell Leukemia
Dry Tap on aspiration
Hairy Cell Leukemia
Tx of Hairy Cell Leukemia
2-CDA, cladribine which is an adenosine analog inhibiting adenosine deaminase
Cells have filamentous hair-like projections
Hairy Cell Leukemia
Auer Rods
Acute Myelogenous Leukemia
Increased circulating myeloblasts on peripheral smear in adults
AML
Responds to all-trans retinoic acid (ATRA)
Induces differentiation of myeloblasts, txs AML-M3
Common presentation of AML
DIC
Philadelphia Chromosome
t(9; 22) CML bcr-abl hybrid
Tx for CML
Imatinib, inhibits bcr-abl TK
t(15; 17)
M3 type of AML (responsive to ATRA)
Alpha-fetoprotein
heptoma, germ cell neoplasms
CEA
breast and colon Cancer
CA125
Ovarian Cancer
PSA
Prostate Cancer, more for follow-up than diagnosis
Proliferation of monoblasts, lack MPO, blasts infiltrate gums
Acute Monocytic Leukemia
Proliferation of megakaryoblasts, lack MPO, associated with Downs before 5y/o
Acute Megakayoblastic Leukemia
Jenny I got your number
8675309