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Colonic Crohn's disease

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Colonic involvement can be seen in around 60% of patients with Crohn’s disease (1).

Involvement of the colon in Crohn’s disease can be pancolonic where the entire colon is involved or segmental (part of the colon is involved) (1).

Features include:

  • diarrhoea in approximately 80%
  • perianal disease is common
  • the rectum is usually spared
  • rectal bleeding is less common than in ulcerative colitis
  • toxic dilatation is less common than in ulcerative colitis
  • extraintestinal manifestations are more common in colonic Crohn's disease

Reference:

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