Onc Flashcards
CD34
hematopoietic stem cell
myeloblast
produces granulocytes
neutropenia seen in….
drug toxicity or infection (low neutrophils)
causes of lymphopenia
- immunodeficiency (digeorge)
- high cortisol (cushing)
- autoimmune (SLE)
- radiation (most sensitive cells)
causes of leukocytosis
- bacterial infection (left shift - immature cells - less Fc receptors)
- tissue necrosis
- high cortisol (release of marginated pool)
CD16
marker for decreased Fc receptors in left shift
monocytosis
- chronic inflammatory states
high yield increase in eosinophila
- Hodgkin lymphoma (IL5)
- also allergy and parasites
basophilia
CML
lymphocytic leukocytosis
- viral infections
- bordetella pertussis (bacterial exception) - lymphocytosis factor blocking to lymph node
causes of mono
EBV then CMV
findings in mono
- LAD
- splenomegaly (PALS)
- atypical lymphocytes and high white count (look like monocytes)
PALS
t cells in spleen
monospot
- detects IgM heterophile antibodies
- negative in CMV
definitive diagnosis in mono
EBV viral capsid antigen
complications of mono
- splenic rupture
- penicillin allergy
- dormant in B cells (can cause lymphoma)
acute leukemia
increase in blasts in bone marrow
presentation of leukemia
- anemia, thrombocytopenia, neutropenia (bone marrow is crowded out)
- high WBC count
tDt
ALL - DNA polymerase marker
myeloperoxidase
AML (auer rod)
ALL associations
- lymphoblast
has tDt (DNA polymerase) - children and Down syndrome after 5
markers in B-ALL
CD10, CD19, CD20
prophylaxis in B-ALL needed in…
scrotum and CSF (blood brain barrier)
chromosomes in B-ALL
12: 21 = good (kids)
9: 22 = bad (adults)
markers in T-ALL
CD2-CD8, no CD10
T-ALL
- teenager
- thymic mass
- call it lymphoma
AML
- myeloperoxidase (Auer rods)
APML
- retinoic acids receptor
- promyelocytes
- Auer rods risk for DIC
- give ATRA (cause blast to mature)
- 15:17
acute monocytic leukemia
- infiltrate gums
acute megakaryoblastic leukemia
- no MPO
- associated with Down syndrome (before 5)