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Submucosal arterial malformation of the colon with massive hemorrhage. Report of a case

C K Ma1, H Padda, E H Pace

  • 1Department of Pathology, Henry Ford Hospital, Detroit, Michigan 48202.

Insights

A rare case of massive lower intestinal bleeding caused by a large artery in the ascending colon, mimicking Dieulafoy

Area of Science:

  • Gastroenterology
  • Vascular Medicine
  • Colorectal Surgery

Background:

  • Dieulafoy's disease typically involves gastric submucosal artery erosion.
  • Lower gastrointestinal bleeding (LGIB) has diverse etiologies.
  • Submucosal arterial abnormalities are uncommon causes of LGIB.

Observation:

  • A 60-year-old male presented with massive lower intestinal bleeding.
  • Angiography identified an abnormally large submucosal muscular artery in the ascending colon as the bleeding source.
  • The clinicopathologic features were identical to Dieulafoy's disease.

Findings:

  • This case represents a rare instance of Dieulafoy's-like lesion in the ascending colon.
  • Erosion of a large submucosal artery in the colon can cause severe hemorrhage.
  • Three similar cases of colonic Dieulafoy's disease have been previously reported.

Implications:

  • Highlights the possibility of Dieulafoy's disease occurring outside the stomach, specifically in the colon.
  • Emphasizes the importance of angiography in localizing obscure lower gastrointestinal bleeding.
  • Suggests considering vascular anomalies in the differential diagnosis of massive LGIB.

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