Endoscopic ultrasonography and submucosal resection in the diagnosis and treatment of rectal carcinoid tumors

摘要

＜正＞ Rectal carcinoid rumors are often diagnosed assubmucosal tumors on radiological or endoscopicexaminations.Usually,its definite size and character,theinfiltration of muscularis propria and vessels can not becorrectly diagnosed preoperatively.In recent years,endoscopic ultrasonography（EUS）has been used in thediagnosis of submucosal tumors of the gastrointestinaltracts.Conventional endoscopic polypectomy allowslocal excision of local tumors,but is often associated withrumor involvement of the resection margin thatnecessitates further interventions.In this study wedetermined the characteristics of rectal carcinoid tumorsby using EUS,and evaluated endoscopic submucosalresection（ESMR）in treating rectal carcinoid tumors.