Hematology and Oncology Flashcards

1
Q

which platelet granules contain ADP and calcium

A

dense granules

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2
Q

which platelet granules contain vWF, fibrinogen, and fibronectin

A

alpha granules

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3
Q

which neutrophil granules contain LAP, collagenase, lysozyme, and lacteferrin

A

specific granules

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4
Q

which neutrophil granules contain proteinases, acid phosphatase, MPO, and beta-glucuronidase

A

azurophilic granules

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5
Q

what receptor on macrophages binds LPS lipid A

A

CD14

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6
Q

MOA cromolyn sodium

A

prevents mast cell degranulation, for asthma prophylaxis

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7
Q

components of Hb A

A

2 alpha, 2 beta

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8
Q

components of Hb A2

A

2 alpha, 2 delta

elevated in beta thal minor

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9
Q

components of fetal hemoglobin

A

2 alpha, 2 gamma

elevated in beta thal major

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10
Q

components of Hb H

A

4 betas, seen in 3 alpha deletions

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11
Q

components of Hb Barts

A

4 gamma, seen in 4 alpha deletions which causes fatal hydrops fetalis

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12
Q

which hemoglobin moves the farthest on electrophoresis, and which are behind

A

A goes the farthest, then F, then S, then C

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13
Q

which factors are inactivated by warfarin

A

II, VII, IX, X, C, S

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14
Q

protein C cleaves

A

V, VIII

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15
Q

acanthocyte (spur cell) assoc dz

A

liver disease, abetalipoproteinemia

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16
Q

degmacyte (bite cell) dz assoc

A

G6PD

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17
Q

echinocyte (burr cell) dz assoc

A

ESRD, liver disease, pyruvate kinase deficiency

note projections are more uniform and smaller than those of the spur cell

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18
Q

spherocyte dz assoc

A

hereditary spherocytosis, drug- and infection-induced hemolytic anemia

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19
Q

target cell dz assoc

A

HbC disease, asplenia, liver disease, thalassemia

“‘HALT,’ said the hunter to his target”

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20
Q

Heinz body dz assoc

A

G6PD deficiency. precursor the the bite cell

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21
Q

Howell-Jolly bodies dz assoc

A

aslpenia

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22
Q

microcytic anemias

A

late iron deficiency, late ACD, thalassemias, lead poisoning, sideroblastic anemia

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23
Q

normocytic, nonhemolytic anemias

A

early iron deficiency, early ACD, aplastic anemia, CKD

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24
Q

normocytic, intrinsic hemolytic anemias

A

RBC membrane defects (e.g. HS), enzyme defects (e.g. G6PD and PK), HbC disease, sickle cell, PNH

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25
normocytic extrinsic hemolytic anemias
autoimmune, microangiopathic, macroangiopathic, infections
26
megaloblastic anemias
folate deficiency, B12 deficiency, orotic aciduria
27
macrocytic, non-megaloblastic anemias
liver disease, alcoholism, Diamond-Blackfan anemia
28
Burton lines
lead lines on gingivae
29
deficiency sideroblastic anemia
XR in delta-ALA synthase, which is first step and RLS (occurs in mitochondria)
30
treatment sideroblastic anemia
pyridoxine/B6, a cofactor for delta-ALA synthase
31
which drugs can cause folate deficiency
methotrexate, TMP, and phenytoin
32
defect in orotic aciduria
UMP synthase deficiency if with hyperammonemia, it is ornithin transcarbamylase deficiency
33
treatment orotic aciduria
UMP to bypass UMP synthase deficiency
34
defect in paroxysmal noturnal hemoglobinuria
defect in CD55 (decay-accelerating factor) and/or CD 59 (MAC-inhibitory protein)
35
triad of sx in PNH
coombs-negative hemolytic anemia, pancytopenia, venous thrombosis
36
tx PNH
eculizumab
37
which dz cause cold agglutinin
mycoplasma and mononucleosis
38
threshold neutropenia
less than 1500
39
threshold lymphopenia
less than 1500 (in kids less than 3000)
40
threshold eosinopenia
less than 30
41
results of steroids on blood levels of eosinophils, lymphocytes, and neutrophils
neutrophilia (high) | low eos and lymphs
42
name the intermediates in heme synthesis
glycine + succinyl-CoA > delta ALA > porphobilinogen > hydroxymethylbilane > uroporphyrinogen III > coproporphyrinogen III > protoporphyrin > heme
43
enzyme def and location for sideroblastic anemia
delta ALA synthase in mitochondria note this is an XR disease
44
enzyme def and location for lead poisoning
1) d-ALA dehydratase in cytoplasm | 2) ferrocheletase in mitochondria
45
enzyme def and location for acute intermittent porphyria
porphobilinogen deaminase in cytoplasm
46
enzyme def and location for porphyria cutanea tarda
uroporphyrinogen decarboxylase in cytoplasm
47
what accumulates in lead poisoning
protoporphyrins and delta-ALA
48
what accumulates in AIP
porphobilinogen, delta-ALA, coporphobilinogen (in the urine. != coproporphyrinogen III)
49
what accumulates in porphyria cutanea tarda
uroporphyrin
50
blistering cutaneous photosensitivity is a sx of which porphyria
PCT
51
abdominal pain, polyneuropathy, port-wine colored urine and psychological distrubances is a sx of which porphyria
AIP
52
inheritance for each hemophilia
A XR 8 B XR 9 C AR 11
53
MOA desmopressin for blood disorders and use
increases vWF release from platelets. good for vWD and hemophilia A note: not effective for hemophilia B
54
acquired cause of antithrombin III deficiency
proteinuira
55
cytology for reed sternberg cells
CD15+, CD30+
56
translocation and gene Burkitt
8;14 c-myc, heavy ig
57
translocation and gene follicular lymphoma
14;18 heavy ig, bcl-2
58
translocation and gene mantle cell lymphoma
11;14 cyclin d1, heavy Ig
59
translocation and gene CML
9;22. bcr-abl (abl is on 9) also seen in some ALL
60
translocation and gene APL
15;17 PML-RARA
61
translocation ALL with better prognosis
12;21
62
T cell type mycosis fungoides
CD4
63
cytology ALL
TDT+ (pre-T and pre-B), CD10+ (pre-B)
64
cytology CLL
CD20+, CD5+
65
which leukemia/lymphoma is TRAP+
hair cell leukemia
66
CML has (high/low) LAP
very low
67
benign reactive neutrophlia has (high/low) LAP
high
68
translocation and gene Ewing sarcoma
11;22 EWS-FLI 1
69
presentations langerhans cell histiocytosis
lytic bone lesions and skin rash | or, recurrent otitis media with mastoid mass
70
cytology langerhans cell histiocytosis
S100+, CD1a+
71
Birbeck granules
tennis racket-shaped granules seen on EM in langerhans cell histiocytosis
72
what do you use to monitor warfarin
PT
73
what do you use to monitor heparin
PTT
74
class of drugs: enoxaparin, dalteparin
LMWH
75
class of drugs: bivalirudin
direct thrombin inhibitor
76
class of drugs: cilostazol, dipyridamole
PDE III inhibitors
77
MOA PDE III inhibitors
cause increase in platelet cAMP, inhibiting aggregation and causing vasodilation. used in angina prophylaxis
78
MOA eptifibatide, tirofiban
GP-IIb/IIIa inhibitors
79
cell cycle independent chemo
platinum agents (e.g. cisplatin) and alkylating agents (busulfan, cyclophos, ifosfamide, nitrosoureas)
80
MOA cladribine
purine analog antimetabolite. causes nephrotoxicity and neurotoxicity
81
MOA cytarabine (arabinofuranosyl cytidine)
pyrimidne analog antimetabolite
82
effect of leucovorin on 5FU AEs
worsens myelosupression
83
effect of leucovorin on methotrexate AEs
reverses myelosuppression
84
etoposide, teniposide are for topo [I or II]
II
85
irinotecan, topotecan are for topo [I or II]
I
86
MOA erlotinib
EGFR TKI for non-small cell lung carcinoma
87
MOA cetuximab
mAb against EGFR used for stage IV CRC (wildtype KRAS)
88
administer this compound to reduce doxorubicin cardiotox
dexrazoxane
89
use this to mitigate cisplatin-induced neprhotoxicity
amifostine, a scavenger of free radicals