Lymphoid Neoplasms Flashcards
Neoplastic population of immature lymphocytes (blasts).
Lymphoblastic leukemia/lymphoma
Usually leukemia (BM and blood)
B-ALL
Usually lymphomic mediastinal mass
T-ALL
Most ALLs are of ___________ lineage
B cell
Most common cancer of children
Lymphoblastic leukemia/lymphoma
Incidence of pre-B ALL highest at age _____
4
Incidence of pre-T ALL highest ________
in adolescence
Abrupt stormy onset. Bone pain in kids. Hepatosplenomegaly.
Lymphoblastic leukemia/lymphoma
“hand mirror”
Lymphoblastic leukemia/lymphoma
TdT, CD19, CD10, CD79a, cCD3, surface light chain negative
Lymphoblastic leukemia/lymphoma
hyperdiploidy
t(9;22)
t(12;21)
Good prognosis PreB ALL
t(v;11q23)
MLL gene
Poor prognosis PreB ALL
Translocations involving TCR on chr 7 and 14
Pre T ALL
Complete remission 95% kids and 60-85% adults
ALLs
Less than 2, adolescent or adult presentation. High peripheral blast count. Unfavorable cytogenetics. Minimal residual disease after treatment. t(v;11q23)
Poor risk factors ALL
Ages 2-10. Low WBC count. Early Pre-B phenotype (CD19/CD10). Favorable cytogenetics.
Favorable prognostic factors
CLL/SLL
Chronic lymphotic leukemia/Small lymphocytic lymphoma
Leukemia. Leukocytosis and absolute lymphocytosis
chronic lymphocytic leukemia (CLL)
Lymphomatous
small lymphocytic leukemia SLL
Most common leukemia of adults in western world
chronic lymphocyctic leukemia
Mostly ppl older than 50. Most pts asymptomatic. WBC counts variable. Hepatosplenomegaly. Immune disruptions. Hypogammaglobulinemia, hemolytic anemia, thrombocytopenia
CLL/SLL
Small, mature lymphs with hyperclumped nuclear chromatin. Smudge cells
Chronic lymphocytic leukemia
CD19/CD5/CD23
dim CD20
dim surface light chain
Chronic lymphotic leukemia/Small lymphocytic lymphoma
Transformation of chronic lymphocytic leukemia/small lymphocytic lymphoma to diffuse large b cell lymphoma
Richter syndrome
indolent
most pts die of other problems
CLL/SLL
Germinal center B cells that mimic normal lymphoid follicles. Second most common NHL. BM involvement.
Follicular lymphoma
Has 2 cell types (centocytes and centroblasts)
Follicular lymphoma
Small cleaved cells
centrocytes