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Related Experiment Videos

Colon cancer in rectal bladder.

H Kotanagi1, M Ito, K Koyama

  • 1Department of Surgery, Akita University School of Medicine, Japan.

Journal of Gastroenterology
|November 1, 2001
PubMed
Summary

Colon cancer can develop in a rectal bladder, a surgical alternative to ureterosigmoidostomy. Regular colonoscopies are crucial for patients with urinary diversion into the colon to detect such cancers early.

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Area of Science:

  • Urology
  • Gastroenterology
  • Surgical Oncology

Background:

  • Ureterosigmoidostomy is associated with an increased risk of colon cancer.
  • Rectal bladders were developed as an alternative to reduce cancer risk.
  • Few reports exist on cancer development in rectal bladders.

Observation:

  • A 77-year-old man presented with hematochezia.
  • Colonoscopy identified a rectal bladder tumor near the urine inlet.
  • The tumor invaded the pubic bone.

Findings:

  • A moderately differentiated adenocarcinoma developed in the rectal bladder 6 years post-operation.
  • The cancer originated from the colonic mucosa within the rectal bladder.
  • Continuous urine exposure increases cancer risk in colonic mucosa.

Implications:

  • Gastroenterologists should consider surveillance colonoscopy for patients with urinary diversion into the colon.
  • Early detection of rectal bladder cancer is vital.
  • This case highlights a rare but serious complication of urinary diversion surgery.

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