炎症性肠病(IBD)肠外表现多种多样,发生率一般为1/3左右。多累及关节、皮肤、眼部以及肝胆系统。一些肠外表现可先于肠道原发病出现,而一旦出现某一种肠外表现,患者发生其他肠外表现的风险亦随之升高。发病机制仍然不确定,目前认为结肠上皮内有些蛋白质可能与眼、关节、皮肤及 Inflammatory bowel disease (IBD) a variety of parenteral manifestations, the incidence is generally about 1/3. More involved in joints, skin, eyes and liver and gallbladder system. Some parenteral manifestations may precede the onset of the gut, and the risk of other parenteral manifestations increases as the appearance of one parenteral manifestation. The pathogenesis is still uncertain, and it is currently believed that some proteins in the colon epithelium may be associated with ocular, joint, skin and