溃疡性结肠炎(ulcerative colitis,UC)是一种病因仍不十分清楚的直肠和结肠慢性非特异性炎症性疾病。主要侵犯直肠、结肠,是炎症性肠病(inflammatory bowel disease,IBD)的一种。临床表现为腹泻、黏液脓血便、腹痛。病情轻重不等,多呈反复发作的慢性病程,使患者生活质量受到严重影响。近年来随着生活水平的提高,饮食结构、生活习惯的改变,环境的变化及诊断技术的不断进步,我国UC的发病率逐年增高~([1])。本文报道 Ulcerative colitis (UC) is a chronic nonspecific inflammatory disease of the rectum and colon that is still not well understood. The main violation of the rectum, colon, is a kind of inflammatory bowel disease (IBD). Clinical manifestations of diarrhea, mucus pus and blood, abdominal pain. Serious illness ranging from mostly repeated episodes of chronic disease, the quality of life of patients are seriously affected. In recent years, with the improvement of living standards, diet structure, lifestyle changes, environmental changes and the continuous improvement of diagnostic techniques, the incidence of UC is increasing year by year in China (1). This article reports