Atypical endoscopic findings of Crohn's disease.

A 48-year-old man with an unremarkable medical history was referred to our center for evaluation of 4-5 months history of diarrhea without any pathological products and abdominal pain. Laboratory analysis and abdominal ultrasound were normal. We did a colonoscopy and found an isolated diverticulum in the sigmoid colon. In distal areas of the right colon and cecum, there were multiple mucosal “bridges” which occupied the whole lumen like a mesh (Fig. 1), without further signs of inflammatory activity. Nevertheless, the ileocecal valve was more open than usual and showed a slight erythema. The terminal ileum was normal. The colonic histology (Fig. 2) displayed unspecified chronic inflammation, and the terminal ileum samples were normal. Our diagnosis, based on the clinical data and the endoscopic findings, was Crohn’s disease without acute inflammation.