慢性非特异性溃疡性结肠炎(下简称慢性结肠炎),为常见病多发病,发病年龄颇为广泛。据Russell L、Cecil 氏等报告,最小年龄为10岁,最高70余岁,其中多见于20—40岁男女青壮年。本病并无地理区域、种族或国别之分,分布世界各地,且其发病率趋于上升。似无明显性别差别。国外比国内多见。该病迁延日久,病变累及远端结 Chronic nonspecific ulcerative colitis (hereinafter referred to as chronic colitis), is a common disease frequently, the age of onset is quite extensive. According to reports by Russell L, Cecil et al., The minimum age is 10 years and the highest is 70 years, and the most common are young men and women aged 20-40. The disease is not geographical, racial or country points, distributed around the world, and its incidence tends to rise. Seems to be no gender difference. More common than foreign countries. The disease lasted a long time, the lesions involving the distal junction