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过去２０年中经结肠镜检查，结合活检和临床表现符合溃疡性结肠炎（下称ＵＣ）诊断的共４８６例，占结肠镜检查总数的３．５１％。其中男３０４例、女１８２例，平均年龄为４２．４岁。病程少于１０年者４３２例，占８８．９％。临床表现为粘液脓血便和腹泻。结肠镜以粘膜充血、水肿伴糜烂及浅表溃疡最为多见，占８０．８％。分布范围中，直、乙结肠类型占５５．３％。临床类型以慢性活动期型为多见，占８２．３％。癌变４例，占０．８２％。总结认为，结肠镜对ＵＣ确诊率为９６．４％。本组发病有年龄偏大，病程短，左侧结肠炎多，程度轻，癌变率低等特点。
In the past 20 years, a total of 486 cases diagnosed by colonoscopy combined with biopsy and clinical manifestations according to ulcerative colitis (UC) accounted for 3.51% of the total number of colonoscopy. There were 304 males and 182 females, with an average age of 42.4 years. 432 cases of disease duration less than 10 years, accounting for 88.9%. Clinical manifestations of mucus and blood and diarrhea. Colonoscopy to mucosal congestion, edema with erosion and superficial ulcers most common, accounting for 80.8%. Distribution, straight, B colon type accounted for 55.3%. Chronic active type of clinical type is more common, accounting for 82.3%. 4 cases of cancer, accounting for 0.82%. Conclusion, colonoscopy of UC confirmed 96.4%. The incidence of this group are older, shorter duration, more left colitis, the degree of light, low rates of cancer.