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15
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Discuss the TNM classification of malignancy and colorectal cancer
T: extent/size of tumor (how far grown in wall colon-mucosa, muscularis properia, suberosa/serosa); N: spread to nearby lymphs; M: metastasis to distant organs
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15
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Identify common risk factors for breast cancer
genetics (BRCA1/2, HER2); Demographics (female, older); prolonged estrogen exposure; Previous cancers/radiation; Lifestyle (alcohol, BMI, smoking)
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15
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Describe how 5-flurouracil (5-FU) produces its chemotherapeutic effect
Inactive (parent drug)-> metabolized-> metabolites FdUMP block TS=interfere with DNA/RNA/protein formation
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15
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Describe the clinical features of TTP
Purpura, Confusion, Arrhythmia, Proeinuria, increase serum indirect bilirubin + LDH, decrease haptoglobin
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15
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Describe the process of plasmapheresis
liquid part of the blood, or plasma, is separated from the blood cells. Typically, the plasma is replaced with another solution--> returned to body
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seesaw
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rocket
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fairy
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thief
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15
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Differentiate the causes and inheritance patterns of the major types of vWD (Type 1, 2, 3)
Type 1: partial deficiency-quantity, autosomal dominant; Type 2: qualitative variant, AD/some AR; Type 3-severe quantitative-missing vWF, Autosomal Recessive
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15
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What is the underlying pathogenesis of Von Gierk's (Type I) disease?
glucose-6-phosphatase deficiency (can't go from G6P to Glucose)
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lifesaver
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star
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gift
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lifesaver
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15
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What is the characteristic translocation associated with Ewing Sarcoma?
location at the chromosome 22 breakpoint of the t(11;22)(q24;q12) translocation; EWS (EWSR1) gene is involved in translocations in Ewing's sarcoma
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15
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Describe the process that leads to microangiopathic hemolytic anemia (schistocyte formation) in TTP
TTP->ADAMTS13 deficient->cleavage down, increase vWG multimers->hypercoagubale->prothombotic->aggregate->obstruct vessel->sheering RBCS=shistocytes
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15
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Discuss the clinical significance of APC-resistance assay and ratio in screening for factor V gene mutation
degree of abnormality of APC-assay correlates to heterozygosity (higher APC ratio) or homozygosity (low APC ratio) factor V Leiden mutation
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15
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Contrast the pathogenesis of TTP with that of HUS
HUS: shiga toxin->ADAMTS 13 inhibition->failure to cleave vWF multimers; TTP: ADAMTS13 antibodies/congenital ADAMTS13 mutation->failure to cleave vWF multimers
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trap
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gift
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gift
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baam
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15
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How does p53 signaling and senescence interact with aging and progeria?
DNA damage->lamina disrupted->chromatin conformation distress->increase p53 signaling->increase cell/tissue senescence= accelerated aging
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monster
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shark
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fairy
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lifesaver
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