Case Report
Copyright ©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Jun 6, 2021; 9(16): 3988-3995
Published online Jun 6, 2021. doi: 10.12998/wjcc.v9.i16.3988
Laterally spreading tumor-like primary rectal mucosa-associated lymphoid tissue lymphoma: A case report
Ya-Li Wei, Cong-Cong Min, Lin-Lin Ren, Shan Xu, Yun-Qing Chen, Qi Zhang, Wen-Jun Zhao, Cui-Ping Zhang, Xiao-Yan Yin
Ya-Li Wei, Cong-Cong Min, Lin-Lin Ren, Shan Xu, Qi Zhang, Wen-Jun Zhao, Cui-Ping Zhang, Xiao-Yan Yin, Department of Gastroenterology, The Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong Province, China
Yun-Qing Chen, Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong Province, China
Author contributions: Wei YL wrote the manuscript; Yin XY performed endoscopic submucosal dissection for the patient and revised the article; Min CC and Ren LL revised the manuscript; Chen YQ contributed to the histopathology and immunohistochemistry staining; all other authors reviewed and approved the final manuscript to be published.
Informed consent statement: Written informed consent from the patient was obtained.
Conflict-of-interest statement: The authors declare that they have no conflict of interest to report.
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: http://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Xiao-Yan Yin, MD, PhD, Chief Doctor, Department of Gastroenterology, The Affiliated Hospital of Qingdao University, No. 16 Jiangsu Road, Qingdao 266003, Shandong Province, China. yxy4503@163.com
Received: January 2, 2021
Peer-review started: January 2, 2021
First decision: January 27, 2021
Revised: January 31, 2021
Accepted: March 9, 2021
Article in press: March 9, 2021
Published online: June 6, 2021
Processing time: 131 Days and 18.9 Hours
Core Tip

Core Tip: Compared to mucosa-associated lymphoid tissue (MALT) in the stomach, primary rectal MALT lymphoma remains a rare disease. There are no representative clinical symptoms or endoscopic features reported in the literature. We report a case of rectal MALT lymphoma with a laterally spreading tumor-like appearance. The lesion presented enlarged and dilated vessels on the surface. Endoscopic submucosal dissection was performed. The histopathological and immunohistochemical findings led to a diagnosis of rectal MALT lymphoma.