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[Colonic varices; a case report].

S Kuroki1, S Kitagawa, R Nakajima

  • 1Department of Radiology, Fukuoka University School of Medicine.

Nihon Igaku Hoshasen Gakkai Zasshi. Nippon Acta Radiologica
|February 24, 2001
PubMed
Summary

Colonic varices, a rare condition often linked to portal hypertension, can stem from inferior mesenteric vein obstruction due to arteriovenous malformations. Careful monitoring is crucial due to bleeding risks.

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Area of Science:

  • Gastroenterology
  • Vascular Medicine

Background:

  • Colonic varices are uncommon, typically associated with portal hypertension.
  • This case presents a rare instance of colonic varices potentially caused by inferior mesenteric vein obstruction.

Observation:

  • Barium enema and colonoscopy revealed multiple, tortuous, polypoid lesions with intact mucosa in the colon.
  • Inferior mesenteric angiography demonstrated an arteriovenous malformation in the sigmoid colon.

Findings:

  • Complete obstruction of the inferior mesenteric vein was identified.
  • Tortuous and dilated marginal veins were observed, suggesting collateral circulation.
  • The colonic varices are hypothesized to be secondary to the arteriovenous malformation-induced venous obstruction.

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Implications:

  • This case highlights an alternative etiology for colonic varices beyond typical portal hypertension.
  • Arteriovenous malformations of the colon should be considered in the differential diagnosis of colonic varices.
  • Close patient follow-up is essential due to the significant risk of gastrointestinal bleeding associated with colonic varices.