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Related Experiment Videos

Investigation of rectal bleeding.

J Y Kang1

  • 1Department of Medicine, National University Hospital, Singapore.

Singapore Medical Journal
|October 1, 1991
PubMed
Summary

For rectal bleeding, colonoscopy or flexible sigmoidoscopy with barium enema is recommended. If bleeding is clearly perianal, flexible sigmoidoscopy alone may be sufficient for diagnosis.

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Area of Science:

  • Gastroenterology
  • Colorectal Medicine

Background:

  • Rectal bleeding and positive fecal occult blood tests are common reasons for gastroenterology referral.
  • Accurate diagnosis is crucial to rule out serious pathology like colorectal cancer.

Purpose of the Study:

  • To evaluate diagnostic strategies for patients with non-emergency rectal bleeding.
  • To determine the yield of different investigations based on bleeding history.

Main Methods:

  • Retrospective analysis of 115 patients with rectal bleeding or positive fecal occult blood tests.
  • Correlation of diagnostic findings with patient history (perianal vs. non-specific bleeding).

Main Results:

  • In patients with a clear perianal bleeding history (n=33), 79% had hemorrhoids.
  • In patients without a clear perianal history (n=82), significant pathology included colonic cancer/polyps (20%), colitis (25%), and perianal disease (29%).

Conclusions:

  • Total colonoscopy or flexible sigmoidoscopy plus double contrast barium enema are generally recommended for investigating rectal bleeding.
  • Flexible sigmoidoscopy may be adequate when bleeding is definitively perianal.

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