Heme Flashcards
t(8;14)
c-myc + heavy chain of Ig
*Burkitt Lymphoma
t(12;21)
ALL w/ good prognosis
t(9;22)
aka Philadelphia chromosome, BCR-abl
*CML and ALL
t(14;18)
BCL-2 activation
*Follicular lymphoma
t(15;17)
Retinoic acid receptor shut off
*APL (M3 type of AML)
Aplastic anemia
Cause: viral, radiation, drugs
BM: (dry tap) hypocellular, just lymphoid and fat cells
Labs: low reticulocyte count
Infectious Mononucleosis
Cause: EBV or CMV
Complication: splenic rupture (and Burkitt’s Lymphoma)
PB: Downey cell (reactive T lymphocyte)
LN: paracortical hyperplasia (bc T cells proliferating)
Serology: Monospot (heterophile Ab) test +ve for EBV (will be -ve for CMV)
Burkitt’s Lymphoma
Cause: c-Myc translocation (EBV assoc.)
Markers: CD19, CD20, CD10 and surface Ig
Follicular Lymphoma
Cause: BCL2 t(14;18)
Morphology: B cell tumor arising from germinal center w/ small or large cells and nodular or diffuse pattern
Markers: CD19, CD20, CD10
Complications: progression to DLBL (large diffuse is worst prognosis)
HL (nodular sclerosis)
RS cell: lacunar
Most common HL (classical type)
Markers: CD15, CD30
HL (lymphocyte predominant)
RS cell: popcorn
Variant HL
Markers: CD20, CD45
HL (mixed cellular)
Cause: EBV assoc.
PB: eosinophils bc IL-5 secretion by RS cells
Classic type
Markers: CD15, CD30
HL (lymphocyte depleted)
RS cell: bizarre
Elderly or HIV+ pt
Classic type
Markers: CD15, CD30
Lymphoma Staging
- Single LN
- 2 LNs on same side of diaphragm
- LNs on both sides of diaphragm
- Disseminated to organs
Hairy Cell Leukemia
TRAP +ve
Markers: CD11c, CD103
BM aspirate: dry tap (hypocellular BM)
Biopsy: fried egg appearance, cells in reticulin
Spleen: red pulp infiltration = beefy red appearance