Findings of colonoscopy and colon biopsy specimens. (A) Macroscopic findings of colonoscopy with cobble-stone-like inflammatory polyps and many longitudinal ulcers in the descending colon. (B) Histopathological findings of specimens in A (hematoxylin and eosin, ×100) with noncaseating granuloma and no evidence of vasculitis.
Yamashita et al. BMC Gastroenterology 2012 12:174 doi:10.1186/1471-230X-12-174