Patho-Hema Flashcards
Marker for B cells
CD20
LYMPH NODE
Location of mostly B cells
Location of mostly T cells
Cortex
>Lymphoid follicles (primary and secondary) - B cells
>Paracortex - T cells
Media
>Sinuses
Location of naive B cells
Area of B cell activation
Mantle zone
Secondary follicle
Germinal center
Hematologic abnormality in Leukemia
Types of Leukemia
Anemia, Thrombocytopenia, Leukopenia
ALL, AML, ApML
CLL/SLL, CML
Differentiate acute from chronic leukemia in terms of
- Age
- Morphology of cells
- Clinical course
- Response to treatment
Acute
-young, primitive, aggressive, responsive
Chronic
-old, mature, indolent, resistant
Hypercellular marrow with lymphoblasts
Differentiate types in:
age
clinical presentation
mutation
B cell ALL
- children, bone marrow failure
- t(12;21), t(9;22)
T cell ALL
- adolescent, thymus mass
- NOTCH-1
> 20% myeloblast in BM
Aleukemic leukemia
Age
Presentation
Prognosis
AML
Adults
Bone marrow failure
Poor
Cells with Needle-like azurophilic granules
Associated with DIC
Dx:
Mutation:
Tx:
Acute Promyelocytic Leukemia
With faggot cells containing auer rods
Mutation in t(15;17)
Curanle with all-trans retinoic acid
Hepatosplenomegaly
Lymohadenopathy
Hypogammaglobulinemka
Lymph node has lymphocytes with proliferation centers
Peripheral blood smear shows SMUDGE CELLS
CLL >5000 lymphocytes, leakage
SLL <5000, distinct tissue mass
Blasts <10% in peripheral blood
WBC >100000
Thrombocytosis
Accelerated phase: unresponsive to therapy, increasing splenomegaly
Blast crisis: >20%, chloroma
Mutation?
Tx?
CML
t(9;22) Philadelphia gene
With tyrosinase activity
Tx: tyrosine kinase activity inhibitor (Imatinib)
Differentiate leukemoid reaction from leukemia
Leukocyte alkaline phosphatase:
Inc. in leukemoid (reactive AP)
Dec. In CML
Differentiate hodgkin from nonhodgkins lymphoma
HL- single axial nodes (cervical, mediastinal, para aortic)
NHL- multiple, peripheral
- extranodal presentation
- mesenteric ring and waldeyer ring involvement
Large, multiple nuclei or single with multiple lobes, each with owl-eye nucleolus
Reed-Sternberg cells in Hodgkins lymphoma
HL type with reactive B cells? Marker
HL types associated with EBV?
Most common HL type?
HL associated with HIV?
Tx of HL
Lymphocyte predominant, CD20
Lymphocyte depleted, Mixed cellularity
Nodular sclerosis
Lymphocyte depleted
Radiotherapy
Anti CD30
Types of NHL
B cell lymphomas
T and NK cell lymphomas
Most common form of NHL
Most common lymphoma in adults
Most common indolent lymphoma in adults
Fastest growing human tumor
DLBCL
DLBCL
Follicular lymphoma
Burkitt lymphoma
Middle age
Painless, generalized lymphadenopathy
Lymph node shows nodular or diffuse aggregate of lymphoma cells and BMA shows paratrabechular lymphoid aggregates
FOLLICULAR LYMPHOMA
B cell lymphoma
Indolent, incurable
May transform to DLBCL or Burkitt
Present in male, 60yo
Rapidly enlarging nodular mass
Diffuse pattern of growth of large cells with highly anaplastic appearance
Fatal without treatment
DIFFUSE LARGE B CELL LYMPHOMA
B cell lymphoma
CD45 (lymphoid), CK (epithelial), Vimentin (mesenchymal)
Diffuse infiltration if medium sized anaplastic lymphocytes, punctuated sith macrophages ghah phagocytose apoptotic lymphocytes
BURKITT LYMPHOMA
B cell lymphoma
Starry Sky pattern
Endemic: mandibular, kidney, adrenal, gonads; latent infection with EBV
Sporadic: ileoceum, peritoneal
MYC t(8;14) Aggressive, responsive to chemo