Crohn Disease

**Definition:** A chronic transmural inflammation that may involve any part of the DIGESTIVE TRACT from MOUTH to ANUS, mostly found in the ILEUM, the CECUM, and the COLON. In Crohn disease, the inflammation, extending through the intestinal wall from the MUCOSA to the serosa, is characteristically asymmetric and segmental. Epithelioid GRANULOMAS may be seen in some patients.

**Tree numbers:** - C06.405.205.731.500 - C06.405.469.432.500

**Synonyms:** - Crohn's Disease - Crohn's Enteritis - Inflammatory Bowel Disease 1 - Regional Enteritis