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Radiology · GI imaging: CT enterography
Sample itemA young man with chronic diarrhoea and suspected Crohn disease has a normal colonoscopy and ileal intubation. Which imaging best assesses the small bowel wall and extramural complications?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
C. CT or MR enterography with oral neutral contrast
Enterography uses a large volume of neutral oral contrast to distend the small bowel so that wall thickening, hyperenhancement, strictures, fistulae and abscesses are seen. MR avoids radiation in young patients needing repeat studies.
Option by option
A. Plain abdominal radiograph
A plain film cannot show wall changes.
B. Barium meal alone
A barium meal shows only the lumen and misses extramural disease.
C. CT or MR enterography with oral neutral contrast (correct)
Correct. Enterography is the best cross-sectional test for the small bowel.
D. Hepatobiliary scintigraphy
Hepatobiliary scintigraphy evaluates bile flow.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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