Membranous bronchiole characterized by multiple small granulomata in the airway wall in a patient with Crohn colitis
(hematoxylineosin, original magnification X80).
Patients with a long history of bowel disease, such as inflammatory bowel disease, Crohn colitis
, or pancolitis, are recommended to have a colonoscopy every 1 to 2 years.
Although there are no randomized clinical trials showing benefit of surveillance in Crohn colitis
, surveillance colonoscopy is recommended by many groups, usually for CD involving more than 1 segment of the colon and/or at least one-third of the colon.
Crohn disease AGA recommendations: * Surveillance for UC also applies for Crohn colitis