Clostridium difficile 감염으로 재활성화 및 중증도가 악화된 좌측 궤양성 대장염

Clostridium difficile (C. difficile) infection appears to be closely related to reactivation, diagnostic delay, and disease progression in patients with inflammatory bowel disease. However, whether C. difficile infection triggers the reactivation of inflammatory bowel disease or vice versa is not certain. We report a case of reactivated and progressed left ulcerative colitis following C. difficile infection in a 56-year-old woman. A series of endoscopic findings in this case report strongly supports a causative role of C. difficile infection on the reactivation and progression of ulcerative colitis. (Korean J Gastroenterol 2011;57:374-378)