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NBDE Flash! - Hemeatology & Oncology
NBDE Flash! Part 1 Review Series. Home Page: http://www.flashcardmachine.com/p/nbdeflash
134
Dentistry
Professional
02/10/2012

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Cards

Term
What are auer rods?
Definition
Fused azurophilic granules on cytosol of blast cells Seen in AML
Term
From which cells do plasma cells differentiate?
Definition
B cells
Term
Which malaria is the most lethal?
Definition
Falciparum
Term
What is the function of lymph node follicles?
Definition
Site of B-cell localization and proliferation.
Term
What does CD stand for?
Definition
cluster of differentiation
Term
Compare the consequences of pheochromocytoma vs. neuroblastoma on blood pressure
Definition
Pheochromocytoma causes episodic hypertension. Neuroblastoma does NOT cause episodic hypertension.
Term
What does MYC activate?
Definition
c-MYC translocation t(8;14)
Term
What SG is associated w/ breast, ovary and prostate CA?
Definition
BRCA 1, BRCA 2
Term
What is the function of BRCA 1/2 gene?
Definition
Regulates DNA repair
Term
WHat CA manifests w/ ADH increase? What do you find clinically?
Definition
SCC of lung, Hyponatremia
Term
What is the most common tumor the adrenal medulla in adults?
Definition
Pheochromocytoma
Term
What are 4 characteristics of the plasma cell morphology?
Definition
Off center nucleus, Clock face chromatin distribution, Abundant RER, and Well developed Golgi apparatus
Term
What is percentage of leukocytes in the blood exist as basophils?
Definition
less than 1%
Term
What are 3 morphological characteristics of monocytes?
Definition
Large, Kidney-shaped nucleus and Extensive 'frosted glass' cytoplasm
Term
What are the components of the air-blood barrier?
Definition
Type I pneumocyte, Endothelial cell, and Their fused basement membrane.
Term
What does N-MYC activate?
Definition
Amplification
Term
What SG is associated w/ familial polyposis: color cancer?
Definition
APC
Term
What is the APC gene function?
Definition
Prevents nuclear transcription, - degrades catenin; an activator of nuclear transcription
Term
What carcinogen is implicated with pancreatic adenocarcinoma, SCC of oropharynx and upper/mid esophagus?
Definition
Alcohol
Term
What are 4 substances contained within the lysosomes of neutrophils?
Definition
Hydrolytic enzymes, Lysozyme, Myeloperoxidase, Lactoferrin
Term
What is the histologic change in lymph nodes during an extreme cellular immune response?
Definition
Lymph node paracortex becomes enlarged during extreme cellular immune response.
Term
What specialized vascular structure is found in the lymph node paracortex? What is the function of this structure?
Definition
Paracortex contains high endothelial venules (HEV). T and B cells enter from the blood through the HEV.
Term
In what area of the spleen are T cells found?
Definition
T cells are found in the PALS and the red pulp of the spleen.
Term
What chromosome is CML found in? What is the name of the chromosome?
Definition
Chromosome 22; Philadelphia Chromosome
Term
What two POC amplify?
Definition
ERB-B2 and N-MYC
Term
What suppressor gene is associated w/ retinoblastoma, osteogenic sarcoma and breast CA?
Definition
RB
Term
What is the function of RB gene?
Definition
G1 to S phase inhibitor
Term
What carcinogen is implicated with stomach AdenoCA?
Definition
nitrosamines and nitrosamides
Term
What are the steps of maturation of a B cell? (2 points)
Definition
Maturation in the marrow and Migration to peripheral lymphoid tissue
Term
What are 4 morphologic characteristics of lymphocytes?
Definition
Round, Small, Densely staining nucleus, and Small amount of pale cytoplasm
Term
What is the most common tumor the adrenal medulla in children?
Definition
Neuroblastoma
Term
What two POC activate point mutation?
Definition
RET and RAS
Term
What are the genes of anti-apoptosis?
Definition
BCL-2 genes
Term
What carcinogen is implicated with colorectal cancer?
Definition
Lithocholic acid and Secondary bile acid
Term
Which leukemia is the result of plasma cell neoplasm?
Definition
Multiple myeloma
Term
What percentage of leukocytes exist as neutrophils in the blood?
Definition
40 - 75%
Term
What two POC activate translocation?
Definition
ABL and c-MYC
Term
What is the function of BCL-2 genes?
Definition
prevents the leakage of cytochrome c (signal for apoptosis)
Term
What carcinogen is implicated with Lung CA? (4)
Definition
Uranium, Asbestos, Chromium, and Nickel
Term
What is the histologic presentation of DiGeorge's syndrome?
Definition
Lymph node paracortex is not well developed in patients with DiGeorge's syndrome.
Term
What leukemia has auer rods?
Definition
Acute Myelogenous Leukemia (M2/M3)
Term
What virus is associated w/ SIS POC and w/ Osteogenic Sarcoma?
Definition
EBV
Term
What disease is associated with BCL-2?
Definition
b-cell lymphoma, Follicular Lymphoma t14;18
Term
What carcinogen is implicated with pleural mesothelioma?
Definition
Asbestos
Term
What leukemia has gingival involvement?
Definition
Acute Monocytic Leukemia (M5)
Term
What carcinogen is implicated with breast cancer and cervical cancer?
Definition
Oral Contraceptives
Term
What is the age distribution of all leukemias?
Definition
ALL (0-14) AML (15-39) AML (40-60) CML (40-60) CLL (>60 years old)
Term
What carcinogen is implicated with SCC of skin, lung CA, liver angiosacroma?
Definition
Arsenic
Term
What are the substances contained within the densely basophilic granules of the basophil? (4)
Definition
- Heparin (anticoagulant) - histamine (vasodilator) - vasoactive amines - Slow reacting substance of anaphylaxis
Term
What carcinogen is implicated with TCC of bladder? (2)
Definition
cyclophosphamide and b-naphthylamine (dye and rubber indus.)
Term
How do you treat falciparum malaria infection?
Definition
IV quinidine or quinine plus doxycycline
Term
What carcinogen is implicated with acute leukemia?
Definition
benzene
Term
What are two important functions of a neutrophil?
Definition
Acute inflammmatory response of a cell and Phagocytosis
Term
What carcinogen is implicated with SCC of penis?
Definition
Smegma in uncircumcised male
Term
What is the lifespan for an erythrocyte?
Definition
120 days
Term
What carcinogen is implicated with SCC of scrotum?
Definition
tar, soot, oil (chimney sweeper)
Term
What kind of cells are found nearby the sinusoids of the spleen?
Definition
Macrophages
Term
What carcinogen is implicated with malignant lymphoma?
Definition
Alkylating agents
Term
What is a reticulocyte?
Definition
A developing erythrocyte
Term
What is the most common risk factor for BCC, SCC, melanoma?
Definition
UVB light
Term
What are two basic morphological characteristics of neutrophils?
Definition
- multilobed nucleus - large, spherical azurophilic primary granules (lysosomes)
Term
What is the most common risk factor for Kaposi's Sacroma?
Definition
HHV-8
Term
Which leukemia has translocation t9;22?
Definition
Chronic Myelogenous Leukemia (CML)
Term
What is the most common risk factor for Nasopharyngela CA?
Definition
EBV
Term
What do medullary sinuses consist of?
Definition
Medullary sinuses contain reticular cells and macrophages.
Term
What is the most common risk factor for larynx CA?
Definition
polycyclic HOC (hydrocarbons)
Term
What cells are found in the lymph node paracortex?
Definition
Paracortex houses T cells.
Term
What is the most common risk factor for distal esophagus?
Definition
barret's disease
Term
What is the primary source of energy for erythrocytes?
Definition
Glucose (90% anaerobically degraded to lactate, 10% by HMP shunt)
Term
What is the most common risk factor for Stomach AdenoCA?
Definition
Helicobacter pylori
Term
What are the major structures of the lymph node medulla?
Definition
Medulla consists of medullary cords and medullary sinuses.
Term
What is the most common risk factor for Colon adenoCA?
Definition
preexisting polyps and tubular and villous adenoma
Term
What cell type closely resembles a mast cell?
Definition
basophil
Term
What are two names for an increased number of red cells?
Definition
Erythrocytosis and Polycythemia
Term
What is the most common risk factor for hepatocellular CA?
Definition
HBV or HCV cirrhosis
Term
What is the basic morphologic structure of an erythrocyte?
Definition
Anucleate, biconcave
Term
What is the most common risk factor for breast CA?
Definition
Age >50, excess estrogen: 1) nulliparity 2) early menarche 3) late menopause 4) obesity
Term
What is the most common cancer and leukemia in children?
Definition
ALL
Term
Describe the histologic structure of sinusoids of the spleen.
Definition
Long, vascular channels in red pulp. With fenestrated 'barrel hoop' basement membrane.
Term
What is the most common risk factor for surface derived ovarian CA?
Definition
nulliparity because of increase of ovulatory cycles
Term
What histological change is seen in neutrophils of a person who is folate/vitamin B12 deficient?
Definition
hypersegmented polys
Term
What is the most common risk factor for choriocarcinoma?
Definition
Complete Hydatidiform Mole
Term
What is the range of concentration for leukocytes in the blood?
Definition
4,000 - 10,000 cells per microliter
Term
What is the most common risk factor for Malignant lymphoma thyroid?
Definition
Hashimoto's Thyroiditis
Term
What is the importance of the physiologic chloride shift in erythrocytes?
Definition
Membranes contain the chloride bicarbonate antiport allowing the RBC to transport carbon dioxide from the the lung periphery for elimination.
Term
What is the most common risk factor for papillary CA of thyroid?
Definition
Ionization Radiation
Term
What is the frequency of acute leukemias?
Definition
Acute Myelogenous Leukemia (M2) 30-40% Acute Promyelocytic (M3) 5-10%, Acute Monocytic (M5) 10%
Term
What is the most common risk factor for medullary CA thyroid?
Definition
MEN IIa/IIb
Term
What is the most common risk factor for Primary CNS lymphoma?
Definition
EBV in AIDS pat.
Term
What is the most common risk factor for Burkitt's Lymphoma?
Definition
EBV
Term
What is the basic morphology of an eosinophil? (2 things)
Definition
Bilobate nucleus and Packed with large eosinophilic granules of uniform size
Term
Which one is protein rich? Transudate or Exude?
Definition
Exude, extra proteins inside the fluid
Term
Describe the location of the lymph node paracortex.
Definition
Region of cortex between follicles and medulla.
Term
What causes flushing and diarrhea in carcinoid Sx?
Definition
serotonin
Term
What leukemia is associated with ABL protooncogene?
Definition
Chronic Myelogenous Leukemia (CML)
Term
What percentage of leukocytes in blood are monocytes?
Definition
2 - 10%
Term
What does the African variant involve? (Burkitt's)
Definition
Jaw
Term
What do you see in Burkitt's?
Definition
Starry Sky Apparence
Term
What is the Starry Sky?
Definition
macrophages w/ phagocytosed apoptotic bodies
Term
What are the characteristic cells in Hodgkin's Lymjphoma?
Definition
association w/ EBV; cutaneous anergy to common antigens
Term
What are the cells of Hogkin's L. called?
Definition
Reed-Sternberg Cells
Term
What are Reed-Sternberg Cells?
Definition
transformed germinal center B cells
Term
What is elevated in vWF disease?
Definition
Elevated Bleeding Time (platelet adh. Problem) aPTT increased
Term
What is elevated on hemophilia A?
Definition
VIII deficient aPTT increased (intrinsic pathway)
Term
What is elevated in a person taking aspirin?
Definition
Bleeding Time elevated (Just like vWD)
Term
What is elevated in Idiopathic Thrombocytogenic Purpura? Decreased?
Definition
Bleeding Time increased platelets decreased
Term
What are two other diseases that has Bleed Time increased and decreased platelets?
Definition
Thrombotic Thrombocytopenic Purpura , Hemolytic Uremic Syndrome
Term
What factor involved in extrinsic pathway?
Definition
VII
Term
What factor involved in intrinsic pathway?
Definition
XII, XI, IX, VIII
Term
What is the best test for vWF diases?
Definition
ristocetin cofactor assay
Term
What anti bodies does blood group O have?
Definition
anti A-IgM, anti B-IgM, anti AB- IgG
Term
What anti bodies have blood A?
Definition
anti B
Term
What does group B has?
Definition
anti A-IgM
Term
What does group AB has?
Definition
nothing, just like new borns and old people
Term
What blood group has greatest incidence of gastric carcinoma?
Definition
group A
Term
What is associated w/ duodenal ulcer?
Definition
group O blood
Term
Who is the universal donor?
Definition
Group O
Term
Who is the universal acceptor?
Definition
AB no antibodies to attack those cells
Term
What POC is associated w/ Leukemia?
Definition
RAS
Term
What POC is associated w/ Breast CA?
Definition
ERB-B2
Term
What POC is associated w/ Neuroblastoma?
Definition
N-MYC
Term
What POC is associated w/ lung CA?
Definition
RAS
Term
What POC is associated w/ CML?
Definition
ABL
Term
What POC is associated w/ Burkitt's Lymphoma?
Definition
C-MYC, MYC
Term
What POC is associated w/ colon CA?
Definition
RAS
Term
What POC is associated w/ MEN IIa/IIb Syndromes?
Definition
RET
Term
What POC is associated w/ pancreatic CA?
Definition
RAS
Term
What function does SIS have?
Definition
GF synthesis, (Growth Factor)
Term
What fx does ERB-B2 has?
Definition
Receptor Synthesis
Term
What fx does ABL has?
Definition
Non-receptor TK activity
Term
What fx does RET have?
Definition
Receptor Synthesis
Term
What fx does MYC have?
Definition
Nuclear Transcription
Term
What fx does N-MYC have?
Definition
Nuclear transcription
Term
What fx does RAS has?
Definition
GTP signal transduction
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