Case Report
Copyright ©The Author(s) 2017. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastrointest Endosc. Dec 16, 2017; 9(12): 579-582
Published online Dec 16, 2017. doi: 10.4253/wjge.v9.i12.579
Retroperitoneal epithelioid sarcoma: A case report
José A Coronado, Miguel Á Chávez, Martín A Manrique, Jony Cerna, Ana L Trejo
José A Coronado, Miguel Á Chávez, Martín A Manrique, Jony Cerna, Division of Gastrointestinal Endoscopy, Hospital Juarez de Mexico, Mexico City, CDMX 07760, Mexico
Ana L Trejo, Division of Anatomic Pahology, Hospital Juarez de Mexico, Mexico City, CDMX 07760, Mexico
Author contributions: All authors contributed to the acquisition of data, writing, and revision of this manuscript.
Supported by Hospital Juarez de Mexico in Mexico City, Mexico.
Institutional review board statement: This case report was exempt from the Institutional Review Board standards at Hospital Juarez de Mexico.
Informed consent statement: The family involved in this case gave written and verbal consent authorizing use and disclosure of the health information.
Conflict-of-interest statement: All the authors have no conflicts of interest to declare.
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: José A Coronado, MD, Endoscopy Fellow at the Division of Gastrointestinal Endoscopy, Division of Gastrointestinal Endoscopy, Hospital Juarez de Mexico, Pilares 501-503 Colonia del Valle, Delegacion Benito Juarez, Mexico City, CDMX 07760, Mexico. beto_coronado@yahoo.com
Telephone: +52-55-57477560-7222 Fax: +52-61-41408503
Received: February 4, 2017
Peer-review started: February 6, 2017
First decision: March 6, 2017
Revised: March 31, 2017
Accepted: April 23, 2017
Article in press: April 23, 2017
Published online: December 16, 2017
Processing time: 306 Days and 0.1 Hours
Core Tip

Core tip: Epithelioid sarcoma (ES) is a rare malign neoformation, often diagnosed in later stages and associated with high recurrence index and mortality. We report a case of a 65 years old male with a posterior duodenal wall perforation found during endoscopy, communicating with a solid retroperitoneal neoformation. Endoscopic biopsies were sufficient for the diagnosis. Retroperitoneal ES is an extremely rare condition with limited reports, where guidelines for its optimal treatment are not well established.