AML, MPD Flashcards
Mention the common findings in AML
1_Anemia: pallor fatigue weakness
2_thrombocytopenia: bleedind bruisisng.
3_fever that fails to respond to therapy.
4_splenomegaly, hepatomegaly, lympadenopathy
5_bone tenderness.
what are the hematological and bone marrow findings in AML
1_hema: normocytic normochromic anemia, occasionally macrocytic but don’t response to B12 or B9.
nucleated RBC, anisocytosis, poikilocytosis.
platlete count is moderatly depressed(hypogranular and giant).
WBC is variable.
BM: hypercellular, with blasts> 20% to deffrintiate it from MDS
Mention the FAB classification of AML
M0 A myeloblastic L minimaly defferntiated.
M1 AML without maturation
M2 AML with maturation
M2 baso(with basophil blasts)
M3 hypergranular promylelocytic L
M3 variant (hypogranular bilobed, micro).
M4 myelomonocytic L
M5 monocytic L (M5a poorly dif, M5b well deff).
M6 erythroleukemia
M7 megakaryocytic leukemia.
Explain some charecters of M0
- most common in adult.
- WBC: 40% leukocytosis,> 50% leukocytopenia.
- diagnosis: if less than 3% of blasts are positive for peroxidase or SBB and myeloid markers: CD13,14,15,33,34 and negative for B, T cells markers.
- BM is hypercellular with blasts
- Aur rods are not found.
explain some charecters of M1
- predominant cells is blood are are poorly deff myeloblasts with finely reticulated chromatin.
- Leukocytosis in> 50% of ptn.
- Auer rods found in 50% of blasts, if not found it resemble L2 lymphoblast
- positive peroxide and SBB in more than 3%
- 50% of ptn have aquired clonal chromosomal abberrations. t(9:22).
explain some charecters of M2
- most common subtype of AML
- predominant cells are psudopleger Huet and hypogranular neutrophils
- 50% leukocytosis
- monocyte component is less than20% to deff from M4
- high basophil and esinophilia
- 50% have t(8:21)
- better prognosis than average.
explain some charecters of M3
-seen in younger patients
-most common finding: bleeding
-serious complications: DIC
-80-100% have t(15:17)
- unique treatment (all trans retinoic acid).
- two forms: typical hypergranular
variant hypogranular
what are the special characters of M4
- have myeloid and moncytic characters
- elevated serum/urea muramidase
- high frequency of gum(hyperplasis, bleeding) , skin, manengieal involvment.
- poor prognosis
- positive for SBB, peroxidase, specific and non specific estrase
- peripheral blood: monocytes> 5000
- BM. monocytes> 20%
what are the special characters of M5
Schilling
- high frequency of extramedullary infiltration of lungs, colon, menegies, LN, bladder, larynx
- gum hyperplasia
- S/U muramidase is extremely high
- one criterion for diagnosis is 80% or more of all nonerythroid cells in BM are monocytes.
- two forms: a; poorly deff (maturations index <4%) , B; maturation index> 4%).
- M5a: granulocytes <20%, monocytes> 80%,monoblast > 80%.
- M5b: granulocyte <20%,monocytes > 80%, monoblasts <80%.
- peroxidase and SBB are weak
- positive NSE, ANE both substrates.
what are the special characters of M6
DiGuglieumo
- rare type that primerly affect peripheral cells.
- nonexist in children
- MDS often preceed it(erythemic myelosis).
- most common presentation: bleeding.
- most common change in blood: anemia with anisopoikilocytosis, nucleated rbc,sideroblast.
- platlets, WBC usually decreased
- psitive pas
- CD 41,42,61
- abnormalities in chromosome 21
- diagnosed when> 50 % of all BM cells are erythroid, 30% of remaining are blasts
what are the special characters of M 7
- rare, occurs as trasformation of MDS and CGL
- bone marrow dry tap is common
- Anemia and pancytopenia is characteristic
- peripheral blood: megakaryocytes, undeff blasts
- BM biobsy: increased fibroblast +reticulin and> 30% blasts
- negative peroxidase, PAS(-,+), Estrase(+,-) , positive acid phosphatase.
- positive Alpha N acetate estrase, but negative Alpha N butyrate estrase.
- CD 41,42,61, AB against platelete glycoprotein 1b,2b,3b,3a
mention the complications of AML
1_infection
2_bleeding, DIC
3_tumer lysis syndrome
4_leukostasis
Mention the causes of AML
1_radiation 2_chemical drugs «leukemogens» 3_onchogens 4_protoonchogens 5_genetic factors 6_viruses«C RNA»
Do you memorize the table of Cytochemical differntiation of acute leukemia?
subtype.MPO.SBB. PAS. ANAE. AP
M0; + + - - -
M1,2,. +++ ++ + - - +m2
M4. -/++ +/++ - + +
M5. -/+ -/+ - +++ +
M6. - - + + - +
M7. - - - - -
BALL. - - ++ - -
TALL. - - - - +
Regarding polycythemia vera:
A_clinical features and complications.
B_lab findings.
C_critria to diagnose
A_
1_plethooric appearance, iching after hot shower
2_symptoms of slow circulation (cardia, neuro, GIT)
3_symptoms of increased metabolism(sweating, weigt loss)
4_bleeding tendency
5_HSM
6_Complications: CML, myelosclerosis, RF, thrombosis, gout, peptic ulcer.
B:
1_increased Hb, HC, blood viscosity
2_low ESR
3_High WBC C with slight shift«metamyelocyte», H basophils
4_plat c high, decrease level of PF3
5_BM, hypercellular, hyperplasia of erythroid series, Low iron stores, high reticulin.
6_LAP high
7biochemstry: high B12 and B12 binding ptn, low erythropoitein, ferretin, folate.
hyperurecemia and H LDH.
C
1_Jak 2+: Hct> 52% m,> 48% female.
2_Jak2-: major: Hct> 60% m,> 56%f
no secondary erythrocytosis.
palbable splenomegaly, aquired genetic abnormalities«except Jak, BCR-ABL».
minor:
plat> 450×106
Neutrophils> 10 ×106
radiographic splenomegaly
low serum erythropoitein
*4major criteria or 3 major+2minor for diagnosis.
