collagenous colitis

例句：

1. 1. Collagenous colitis is a type of inflammation that affects the walls of the intestines.
   胶原性结肠炎是一种影响肠道壁的炎症类型。
2. 2. The patient was diagnosed with collagenous colitis and required treatment.
   患者被诊断出患有胶原性结肠炎，需要治疗。
3. 3. Researchers have been studying collagenous colitis for years to find new treatments.
   研究人员多年来一直在研究胶原性结肠炎，以寻找新的治疗方式。