Case Report
Copyright ©The Author(s) 2024. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Apr 16, 2024; 12(11): 1980-1989
Published online Apr 16, 2024. doi: 10.12998/wjcc.v12.i11.1980
Hematochezia due to rectal invasion by an internal iliac artery aneurysm: A case report
Fang Li, Bin Zhao, Yong-Qiang Liu, Guo-Qing Chen, Rong-Feng Qu, Chao Xu, Zhui Long, Jin-Song Wu, Mao Xiong, Wei-Hang Liu, Li Zhu, Xiao-Ling Feng, Lei Zhang
Fang Li, Bin Zhao, Yong-Qiang Liu, Guo-Qing Chen, Rong-Feng Qu, Chao Xu, Zhui Long, Jin-Song Wu, Mao Xiong, Wei-Hang Liu, Li Zhu, Xiao-Ling Feng, Lei Zhang, Department of General Surgery, Chongqing General Hospital, Chongqing 401147, China
Co-first authors: Fang Li and Bin Zhao.
Author contributions: Li F and Zhao B contributed equally to this work as co-first authors; Li F and Zhao B provided patient information and wrote the manuscript; Qu RF and Zhu L conceived the manuscript; Liu YQ and Feng XL collected the data; Chen GQ and Liu WH consulted the treatment plan; Long Z and Wu JS prepared histopathological examination and illustrations; Xiong M and Xu C reviewed the topic presentation, structure of the manuscript, illustrations, and photographs; Zhang L obtained resources and reviewed and edited the manuscript; all authors have read and approved the final manuscript.
Informed consent statement: Informed consent was obtained from the patient for the publication of this case report and any accompanying images.
Conflict-of-interest statement: All the 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).
Open-Access: This article 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 NonCommercial (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: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Lei Zhang, MD, PhD, Professor, Department of General Surgery, Chongqing General Hospital, No. 118 Xingguang Avenue, Liangjiang New District, Chongqing 401147, China. zhangleicgh@163.com
Received: January 22, 2024
Peer-review started: January 22, 2024
First decision: February 28, 2024
Revised: March 1, 2024
Accepted: March 21, 2024
Article in press: March 21, 2024
Published online: April 16, 2024
Processing time: 80 Days and 5.7 Hours
Core Tip

Core Tip: Lower gastrointestinal bleeding (LGIB) is one of the primary causes of morbidity and mortality in middle-aged and elderly individuals. Hematochezia is a primary manifestation of LGIB and is often associated with ulcers, tumors, and vascular malformations. Here, we report a very rare etiology, which can be attributed to an internal iliac artery aneurysm invading the proximal rectum causing an arterial fistula to the rectum, resulting in massive hematochezia. We hope that this case serves as a reminder that hematochezia may stem from less common causes.