Fig. 1

Colonoscopy findings. The cecum (a) and ascending colon (b) at the time of diagnosing ulcerative colitis with slight inflammation from the rectum to the transverse colon. The cecum and ascending colon show loss of vascular permeability and adherent purulent mucus. At the time of ulcerative colitis relapse, the cecum (c) and ascending colon (d) had small aphthae and edematous mucosa