胶原性结肠炎罕见，常罹及中年女性，每天有水样腹泻达20次以上。结肠镜检大多正常，但可能有轻微的非特异性改变。因在远端可无典型改变，因此必须对乙状结肠近端作活检。组织学见上皮下有厚度＞10…也可超过叨尺m）的胶原带伴慢性炎症浸润。此胶原带可散布在结肠近端，有极轻 Collagen colitis is rare, and often suffer from middle-aged women, watery diarrhea every day for more than 20 times. Colonoscopy most of the normal, but there may be slight non-specific changes. Since there is no typical change in the distal end, the proximal colon of the sigmoid colon must be biopsy. Histological examination of the subcutaneous epithelium with a thickness of> 10 ... also can be over four feet of collagen belt with chronic inflammatory infiltration. This collagen band can be spread in the proximal colon, with very light