成人结肠重复畸形是一种罕见的先天性消化道畸形，其病因可能与胚胎发育异常有关。本病根据形态和结构可分为四种类型，临床表现因类型、部位和是否与肠腔相通而异，包括腹痛、腹部包块、消化道出血、肠梗阻、感染或穿孔等，手术是目前治疗的主要手段。本文报道成人结肠重复畸形病例1例，旨在提高临床医生对该病的认识。

Adult colonic duplication is a rare congenital malformation of the digestive tract whose etiology may be related to abnormal embryonic development. This disease can be divided into four types according to the morphology and structure. The clinical manifestations vary according to the type，location and whether it is connected with the intestinal cavity， including abdominal pain， abdominal mass，gastrointestinal bleeding， intestinal obstruction， infection or perforation， etc. Surgery is the main treatment method at present. A case of colon duplication in adult was reported in this paper in order to improve the understanding of this disease.