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Intestinal Research 2006;4(1):12-21.
Published online June 30, 2006.
Clinical Characteristics and Long-term Course of Ulcerative Colitis in Korea
Young Min Kim, Sang Hyoung Park, Suk-Kyun Yang, Jae-Won Choe, Sai-Hui Kim, Jeong-Sik Byeon, Seung-Jae Myung, Yun Kyung Cho, Chang-Sik Yu, Kwi-Sook Choi, Jun-Won Chung, Benjamin Kim, Kee Don Choi, Jin-Ho Kim
Departments of Internal Medicine and Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
한국인 궤양성 대장염 환자의 임상적 특징과 장기적 예후
김영민, 박상형, 양석균, 최재원, 김세희, 변정식, 명승재, 조윤경, 유창식, 최귀숙, 정준원, 김병규, 최기돈, 김진호
울산대학교 의과대학 서울아산병원 내과학교실, 외과학교실
Abstract
Background/Aims
Clinical characteristics of ulcerative colitis (UC) in Asian populations are not well recognized. We therefore investigated the clinical features and natural history of UC in Korea. Methods: We retrospectively analyzed 304 Korean UC patients first diagnosed at Asan Medical Center between June 1989 and August 2005. Results: The male to female ratio was 0.94:1 and the median age at diagnosis was 40.0 years (range, 12-72 years). At diagnosis, proctitis was noted in 134 patients (44.1%), left-sided colitis in 69 (22.7%), and extensive colitis in 101 (33.2%). Disease activity at diagnosis was mild in 149 patients (49.0%), moderate in 125 (41.1%), and severe in 26 (8.6%). In addition, 4 (1.3%) asymptomatic patients were detected as a result of a screening colonoscopy. Clinical remission after the first attack was documented in 97.4% of patients. The cumulative relapse rates at 1, 5, 10 years were 30.2%, 72.0%, and 88.4%, respectively. The cumulative risk of proximal extension in patients with proctitis or left-sided colitis was 33.0% at 5 years and 44.5% at 10 years. The cumulative probability of colectomy was 2.0% at 1 year, 2.8% at 3 years, and 3.3% at 5-15 years. The cumulative survival rates at 1, 5, and 10 years were 100%, 99.4%, and 97.4%, respectively. Conclusions: Clinical features of Korean UC patients at diagnosis are similar to those of Westerners. However, UC in Koreans may have a milder course than in Westerners, since Koreans have a lower rate of colectomy. (Intestinal Research 2006;4:12-21)
Key Words: Ulcerative colitis, Korea, Clinical features, Prognosis, Colectomy rate
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