Clinical and histopathologic feature and treatment of early colorectal carcinoma / 中华消化内镜杂志

ABSTRACT

Objective The gross appearance and histopathology as well a s the treatment of early colorectal carcinoma were investigated. Methods The clinical documents and histopathology of 105 cases(106 lesions) with early color ectal carcinoma detected by colonoscopy and proved pathologically after operatio n in past 16 years were retrospectively reviewed and analysed. Results 91.5％ of the early colorectal carcinoma were located distal to the sigmoid.The macro scopic type of these lesions under colonoscopy was classified as Ip type in 34 l esions,Ips type in 13,Is type in 26,Ⅱ a type in 11,Ⅱ a＋Ⅱ c type in 22(in whi ch 21 lesions are Sm carcinoma).Lymph node involvement was observed in 3 cases o f the 25 with Sm carcinoma (accounting for 12％ ).13 lesions(in 12 cases)were re moved under the colonoscopy,local recurrence was found in one case of Sm carcino ma during the follow up period and treated with radical operation.93 lesions(in 93 cases)were treated by local resection or radical surgery. Conclusions Most of the carcinomas withⅡ a＋Ⅱ c type were sm carcinoma.Histopathologically mos t of Sm carcinomas were poorly or moderately differentiated adenocarcinomas.Lymp h node involvement only appeared in Sm carcinoma.Radical operation should be per formed in the following conditions (1)the macroscopic type isⅡ a＋Ⅱ c type,(2) the histopathologic type is poorly differentiated adenocarcinoma,(3)involvement of submucosa or lymph node metastasis