炎症性肠疾病(IBD)包括溃疡性结肠炎(UC)和克罗恩病(CD)。IBD的发病年龄多为10~40岁。近年来关于此病的报道逐渐增多,据不完全统计,我国二者病例总数已超过2万,其中以UC为多,是胃肠道疾病和慢性腹泻的主要原因。IBD的临床诊断相当困难,有文献报道,UC的初诊误诊率约为50%,而CD的 Inflammatory bowel disease (IBD) includes ulcerative colitis (UC) and Crohn’s disease (CD). The age of onset of IBD mostly 10 to 40 years old. In recent years, reports of the disease gradually increased, according to incomplete statistics, the total number of cases in both China has more than 20000, of which more than UC, is the main cause of gastrointestinal diseases and chronic diarrhea. The clinical diagnosis of IBD is quite difficult. It is reported in the literature that the initial misdiagnosis rate of UC is about 50%, while the CD