Clinical outcomes of ampullary neoplasms in resected margin positive or uncertain cases after endoscopic papillectomy
Arata Sakai, Masahiro Tsujimae, Atsuhiro Masuda, Takao Iemoto, Shigeto Ashina, Kohei Yamakawa, Takeshi Tanaka, Shunta Tanaka, Yasutaka Yamada, Ryota Nakano, Yu Sato, Manabu Kurosawa, Takuya Ikegawa, Seiji Fujigaki, Takashi Kobayashi, Hideyuki Shiomi, Yoshifumi Arisaka, Yuzo Kodama, Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
Takao Iemoto, Department of Gastroenterology, Kita-Harima Medical Center, Ono, Hyogo 675-1392, Japan
Yoshifumi Arisaka, Department of Gastroenterology, Nippon Life Hospital, Osaka 550-0006, Japan
Tomoo Itoh, Department of Diagnostic Pathology, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
Author contributions: Sakai A and Masuda A designed the study, analyzed the data, and drafted the manuscript; Tsujimae M and Iemoto T collected the data; Kodama Y gave the final approval of the manuscript; All the other authors revised the manuscript and approved the final version of the manuscript.
Institutional review board statement: This study was conducted with the approval of the ethics committee of Kobe University Graduate School of Medicine, IRB No. 170057.
Informed consent statement: Patients were not required to give informed consent to the study because this retrospective study used anonymous clinical data that were obtained after each patient agreed to treatment by written consent.
Conflict-of-interest statement: There are no conflicts of interest.
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: Atsuhiro Masuda, MD, PhD, Assistant Professor, Doctor, Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo 650-0017, Japan. email@example.com
Telephone: +81-78-3826305 Fax: +81-78-3826309
Received: December 13, 2018
Peer-review started: December 13, 2018
First decision: January 30, 2019
Revised: February 6, 2019
Accepted: February 15, 2019
Article in press: February 15, 2019
Published online: March 21, 2019