Case Report
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World J Gastrointest Endosc. Apr 16, 2013; 5(4): 197-200
Published online Apr 16, 2013. doi: 10.4253/wjge.v5.i4.197
Endoscopic mucosal resection with circumferential mucosal incision of duodenal carcinoid tumors
Yuzo Otaki, Kiyoaki Homma, Yoshitakata Nawata, Kazuomi Imaizumi, Shigeru Arai
Yuzo Otaki, Kiyoaki Homma, Yoshitakata Nawata, Department of Therapeutic Endoscopy, Nihonkai General Hospital, Yamagata 998-0828, Japan
Kazuomi Imaizumi, Department of Gastroenterology, Nihonkai General Hospital, Yamagata 998-0828, Japan
Shigeru Arai, Department of Pathology, Nihonkai General Hospital, Sakata, Yamagata 998-0828, Japan
Author contributions: Otaki Y and Nawata Y designed the report; Homma K, Nawata Y and Imaizumi K were attending doctors for the patients; Homma K performed endoscopic operation; Arai S performed pathological examinations; Homma K and Imaizumi K were performed image diagnosis; Otaki Y organized the report and wrote paper.
Correspondence to: Yuzo Otaki, MD, Department of Therapeutic Endoscopy, Nihonkai General Hospital, 30 Akiho, Sakata, Yamagata 998-0828, Japan. 99016yo@jichi.ac.jp
Telephone: +81-234-262001 Fax: +81-234-265114
Received: December 21, 2012
Revised: January 7, 2013
Accepted: January 29, 2013
Published online: April 16, 2013
Processing time: 115 Days and 23.9 Hours
Abstract

Duodenal carcinoids are a rare form of neuroendocrine tumors, and tend to invade the submucosa during the early stage. Endoscopic treatment is generally recommended for duodenal carcinoids less than 10 mm in diameter. Although a few reports have described the use of endoscopic resection of duodenal carcinoids, there are no published studies on endoscopic mucosal resection with circumferential mucosal incision (EMR-CMI). We performed EMR-CMI for 5 cases of duodenal carcinoids in the duodenal bulb. The mean tumor diameter was 4.6 ± 1.8 mm. Although all of the tumors were located in the submucosa, R0 resection was performed without complication in each case. EMR-CMI may thus be a safe and effective treatment for duodenal carcinoids less than 10 mm in diameter.

Keywords: Case study; Digestive system endoscopic surgery; Duodenal neoplasms; Submucosa; Neuroendocrine tumor

Core tip: Endoscopic treatment for duodenal carcinoids is generally recommended less than 10 mm in diameter. Although a few reports have described endoscopic resection of duodenal carcinoids, there are no published studies on endoscopic mucosal resection with circumferential mucosal incision (EMR-CMI). We performed EMR-CMI for 5 cases of duodenal carcinoids in the duodenal bulb. The mean tumor diameter was 4.6 mm. Although all of the tumors were located in the submucosa, R0 resection was performed without complication in each case. EMR-CMI may thus be a safe and effective treatment for duodenal carcinoids less than 10 mm in diameter.