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Kaplan Qbank USMLE



Author8 Posts
  #1

A 49-year-old man has had presistent peptic uclear disease for 7 years. He was originally diagnosed by upper GI series 6 years ago, and was poorly complaint with medical management. For the past 1 year he has also been complaining of watery diarrhea. At this time all tests for H. Pylori are negetive. Upper GI endoscopy at this time confirms the presence of two duodenal uclears and it also shows multiple submucosal gastric tumors, ranging in size from 1 to 2 cm. Biopsies of these masses are read as carcinoid tumors. Determinations of serum levels of which of the following substances would most likely help establish the diagnosis?
A. Epinephrine
B. 5-Hydroxyindoleacetic acid
C. Gastrin
D. Secretin
E. Uric acid

  #2

B. 5-Hydroxyindoleacetic acid

  #3

I think this is a part of ZES(zollinger ..) so the gastrin will be elevated also
but the answer is B

  #4

shaking headshaking headshaking head

  #5

C GASTRIN

secretin stimulation test, which measures gastrin levels in response to secretin

  #6

then C: ZES

  #7

hmmmm...easy one??raised eyebrow.....C?

___________________
When going gets tough, the tough gets going

  #8

sorry, I should label as " easy one?"







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