Retrospective Study
Copyright ©The Author(s) 2019. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastrointest Endosc. May 16, 2019; 11(5): 373-382
Published online May 16, 2019. doi: 10.4253/wjge.v11.i5.373
Endoscopic characteristics of small intestinal malignant tumors observed by balloon-assisted enteroscopy
Tomofumi Horie, Naoki Hosoe, Kaoru Takabayashi, Yukie Hayashi, Kenji JL Limpias Kamiya, Ryoichi Miyanaga, Shinta Mizuno, Kayoko Fukuhara, Seiichiro Fukuhara, Makoto Naganuma, Masayuki Shimoda, Haruhiko Ogata, Takanori Kanai
Tomofumi Horie, Yukie Hayashi, Kenji JL Limpias Kamiya, Ryoichi Miyanaga, Shinta Mizuno, Makoto Naganuma, Takanori Kanai, Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, Keio University, Tokyo 160-8582, Japan
Naoki Hosoe, Kaoru Takabayashi, Kayoko Fukuhara, Seiichiro Fukuhara, Haruhiko Ogata, Center for Diagnostic and Therapeutic Endoscopy, School of Medicine, Keio University, Tokyo 160-8582, Japan
Masayuki Shimoda, Department of Pathology, School of Medicine, Keio University, Tokyo 160-8582, Japan
Author contributions: All authors helped to perform the research; Horie T manuscript writing, performing procedures and data analysis; Hosoe N manuscript writing, drafting conception and design, performing procedures, and data analysis; Takabayashi K, Hayashi Y, Limpias Kamiya KJ, Miyanaga R, Mizuno S, Fukuhara K, and Naganuma M, contribution to performing the enteroscopy, drafting conception and design; Fukuhara S, contribution to writing the manuscript; Shimoda M, contribution to pathological data analysis; Ogata H and Kanai T contribution to writing the manuscript, drafting conception and design.
Institutional review board statement: This study was reviewed and approved by the Ethics Committee of the Keio University Hospital (approval number, 20160431).
Informed consent statement: Patients were not required to give informed consent to the study because the analysis used anonymous clinical data that were obtained after each patient agreed to treatment by written consent.
Data sharing statement: No additional data are available.
Open-Access: This is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Corresponding author: Naoki Hosoe, MD, PhD, Associate Professor, Center for Diagnostic and Therapeutic Endoscopy, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan. nhosoe@z5.keio.jp
Telephone: +81-3-33531211 Fax: +81-3-33572778
Received: March 23, 2019
Peer-review started: March 25, 2019
First decision: April 11, 2019
Revised: May 11, 2019
Accepted: May 13, 2019
Article in press: May 14, 2019
Published online: May 16, 2019
Processing time: 55 Days and 0.7 Hours
Core Tip

Core Tip: The aim of this study was to elucidate the endoscopic characteristics of small intestinal malignant tumors. Balloon-assisted enteroscopy procedures at our institution were enrolled in the analysis. Malignant tumors were classified into three groups, Group 1: epithelial tumors; Group 2: small intestinal malignant lymphoma; and Group 3, small intestinal gastrointestinal stromal tumors. We collected data from patients’ medical records to determine the endoscopic characteristics for each group. Group 1 and Group 2 were observed as solitary tumors. Enlarged white villi inside and/or surrounding the tumor were seen in 12.5%, 54.5%, and 0% in Group 1, 2, and 3, respectively (P <0.001).