Copyright: ©Author(s) 2026. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial (CC BY-NC 4.0) license. No commercial re-use. See permissions. Published by Baishideng Publishing Group Inc.
World J Clin Cases. Apr 16, 2026; 14(11): 119572
Published online Apr 16, 2026. doi: 10.12998/wjcc.v14.i11.119572
Published online Apr 16, 2026. doi: 10.12998/wjcc.v14.i11.119572
Perforative peritonitis caused by long-term retention of a rectal foreign body: A case report
Daisuke Usuda, Daiki Furukawa, Rikako Imaizumi, Rikuo Ono, Yuki Kaneoka, Eri Nakajima, Masashi Kato, Yuto Sugawara, Runa Shimizu, Tomotari Inami, Riki Sakurai, Kenji Kawai, Shun Matsubara, Risa Tanaka, Makoto Suzuki, Shintaro Shimozawa, Yuta Hotchi, Ippei Osugi, Risa Katou, Sakurako Ito, Kentaro Mishima, Akihiko Kondo, Keiko Mizuno, Hiroki Takami, Takayuki Komatsu, Tomohisa Nomura, Manabu Sugita, Department of Emergency and Critical Care Medicine, Juntendo University Nerima Hospital, Nerima 177-8521, Tokyo, Japan
Takayuki Komatsu, Department of Sports Medicine, Faculty of Medicine, Juntendo University, Bunkyo 113-8421, Tokyo, Japan
Author contributions: Usuda D wrote the manuscript; Furukawa D, Imaizumi R, Ono R, Kaneoka Y, Nakajima E, Kato M, Sugawara Y, Shimizu R, Inami T, Sakurai R, Kawai K, Matsubara S, Tanaka R, Suzuki M, Shimozawa S, Hotchi Y, Osugi I, Katou R, Ito S, Mishima K, Kondo A, Mizuno K, Takami H, Komatsu T, Nomura T, and Sugita M proofread and revised the manuscript; and all authors approved the final version to be published.
Supported by the Japan Society for the Promotion of Science Kakenhi Grant, No. JP24K15491.
Informed consent statement: Written informed consent was obtained from the patient for publication of this report and any accompanying images.
Conflict-of-interest statement: All authors declare that they have no conflict of interest to disclose.
CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).
Corresponding author: Daisuke Usuda, MD, PhD, Associate Professor, Department of Emer
Received: February 2, 2026
Revised: February 20, 2026
Accepted: March 10, 2026
Published online: April 16, 2026
Processing time: 68 Days and 20.6 Hours
Revised: February 20, 2026
Accepted: March 10, 2026
Published online: April 16, 2026
Processing time: 68 Days and 20.6 Hours
Core Tip
Core Tip: Rectal foreign bodies (RFBs) are occasionally encountered, and most cases involve self-insertion for sexual pleasure. They are common in young male patients, and because patients often delay seeking medical attention due to embarrassment, complications such as perforation and peritonitis may already be present at diagnosis. Physicians must remain mindful of the possibility of RFB insertion and conduct history-taking and physical examinations with sensitivity to patient embarrassment. We report the first case of penetrating peritonitis caused by long-term RFB retention, which did not present as an acute abdomen because the perforation was confined to the retroperitoneal space.