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Relationship of proctitis and rectal capacity in Crohn's disease.
  1. P Buchmann,
  2. G A Mogg,
  3. J Alexander-Williams,
  4. R N Allan,
  5. M R Keighley


    In patients with Crohn's disease involving the rectum (n=25), there was an inverse relationship between rectal capacity and the degree of proctitis. However, in patients with Crohn's disease not involving the rectum (n=22) the rectal capacity was similar to that of normal controls (n=20). The frequency of defaecation was not related to the degree of proctitis or to the pressure of a colectomy and ileorectal anastomosis. Control subjects had a significantly lower frequency of defaecation than patients with Crohn's disease irrespective of involvement of the rectum.

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