Case Report
Copyright ©The Author(s) 2020. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Dec 26, 2020; 8(24): 6346-6352
Published online Dec 26, 2020. doi: 10.12998/wjcc.v8.i24.6346
Sigmoid colon duplication with ectopic immature renal tissue in an adult: A case report
Hwan Namgung
Hwan Namgung, Department of Surgery, Dankook University College of Medicine, Cheonan 31116, South Korea
Author contributions: Namgung H was the patient’s colorectal surgeon, reviewed the literature and contributed to manuscript drafting.
Informed consent statement: Informed written consent was obtained from the patient for use of medical records for medical research purpose.
Conflict-of-interest statement: The author declares that he has no conflict of interest.
CARE Checklist (2016) statement: The author has 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: Hwan Namgung, MD, PhD, Professor, Department of Surgery, Dankook University College of Medicine, 119 Dandae-ro, Dongnam-gu, Cheonan 31116, South Korea. gsnamgung@dankook.ac.kr
Received: July 1, 2020
Peer-review started: July 1, 2020
First decision: August 8, 2020
Revised: August 14, 2020
Accepted: November 12, 2020
Article in press: November 12, 2020
Published online: December 26, 2020
Core Tip

Core Tip: Many types of heterotopic tissue were identified within the wall of duplication. We report an adult case of sigmoid colon duplication with ectopic immature renal tissue (EIRT). EIRT is a metanephric remnant arrested in an extra-renal site due to migratory defect and rarely results in extra-renal Wilms’ tumors. Detection of EIRT warrants a proper histological analysis for differential diagnosis between benign EIRT and a true Wilms’ tumor. This case highlights the importance of thorough histopathologic examination of ectopic tissues or tumors in colon duplications.