A 31-year-old man was referred to our hospital because of fever, oral and genital ulcers, mild abdominal pain and diarrhea which occured 6 months before admission. Colonoscopic examination disclosed diffuse, discrete round ulcers of the colon, and the intact terminal ileum. The administration of salazosulfapyridine followed by aminosalicylic acid improved pyrexia and colonic lesions.
Relapsing oral, genital and colonic ulcers suggested the diagnosis of incomplete-type intestinal Behçet's disease. However, microscopic examination demonstrated non-caseous epithelioid cell granulomas, which are characteristic of Crohn's disease.
Therefore, the present case was considered an indeterminate one of inflammatory bowel disease and a long-term follow-up might disclose a definite diagnosis.
