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Case Reports in Gastrointestinal Medicine
Volume 2016, Article ID 6707235, 5 pages
http://dx.doi.org/10.1155/2016/6707235
Case Report

Endoscopic Resection of a Pedunculated Brunner’s Gland Hamartoma of the Duodenum

1Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan
2Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan
3Department of Pathology, Okayama University Hospital, Okayama 700-8558, Japan
4Department of Endoscopy, Okayama University Hospital, Okayama 700-8558, Japan

Received 18 June 2016; Accepted 17 July 2016

Academic Editor: Hideto Kawaratani

Copyright © 2016 Masaya Iwamuro et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A 68-year-old Japanese woman presented with a solitary pedunculated polyp in the duodenum. Endoscopic ultrasonography showed multiple cystic structures in the polyp. The polyp was successfully resected by endoscopic snare polypectomy and pathologically diagnosed as Brunner’s gland hamartoma. Because hamartomatous components were not identified in the stalk of the polyp, we speculate that the stalk developed from traction of the normal duodenal mucosa. When a solitary, pedunculated polyp with cystic structure within the submucosa is found in the duodenum, Brunner’s gland hamartoma should be considered in the differential diagnosis, despite the rarity of the disease. This case underscores the usefulness of endoscopic ultrasonography for the diagnosis of duodenal subepithelial tumors.