Anal cushion lifting method is a novel radical management strategy for hemorrhoids that does not involve excision or cause postoperative anal complications
Gentaro Ishiyama, Yuji Ishiyama, Akihiko Nishio, Ken Tarumi, Maiko Kawamura, Department of Anorectal Surgery, Sapporo Ishiyama Hospital, Sapporo, Hokkaido 064-0915, Japan
Gentaro Ishiyama, Mineko Fujimiya, Department of Anatomy II, Graduate School of Medicine, Sapporo Medical University, Sapporo, Hokkaido 060-0061, Japan
Toshihiko Nishidate, Kenji Okita, Toru Mizuguchi, Koichi Hirata, Department of Surgery, Surgical Oncology and Science, Graduate School of Medicine, Sapporo Medical University, Sapporo, Hokkaido 060-8543, Japan
Author contributions: Ishiyama G and Nishidate T designed the study; Ishiyama G, Ishiyama Y, Nishio A, Tarumi K and Kawamura M acquired the data; Ishiyama G, Nishidate T, Mizuguchi T, Fujimiya M and Hirata K analyzed and interpreted the data; Ishiyama G, Nishidate T, Mizuguchi T and Hirata K drafted this paper; Okita K provided the statistical advice.
Institutional review board statement: The study was reviewed and approved by the Ishiyama Clinic and Hospital Institutional Review Board.
Clinical trial registration statement: This study is registered at http://www.ishiyamahp.jp/index.html [Anorectal clinical trial registry (ACTR)]. The registration identification number is #IS 10012006.
Informed consent statement: All study participants, or their legal guardian, provided informed written consent prior to study enrollment.
Conflict-of-interest statement: None of the authors have any conflicts-of-interest to declare.
Data sharing statement: Technical appendix, statistical code, and dataset available from the corresponding author at (email@example.com). Participants gave informed consent for data sharing.
Open-Access: This article is an open-access article which 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/
Correspondence to: Toshihiko Nishidate, MD, PhD, Department of Surgery, Surgical Oncology and Science, Graduate School of Medicine, Sapporo Medical University, S-1, W-16, Chuo-ku, Sapporo, Hokkaido 060-8543, Japan. firstname.lastname@example.org
Telephone: +81-11-6112111 Fax: +81-11-6131678
Received: February 13, 2015
Peer-review started: February 13, 2015
First decision: May 13, 2015
Revised: June 1, 2015
Accepted: September 10, 2015
Article in press: September 16, 2015
Published online: October 27, 2015