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
Abstract

Epithelioid sarcoma (ES), a mesenchymatous malign neoformation, is often diagnosed in later stages and associated with high recurrence index, metastasis and mortality. We report a case of a 65 years old male, with history of abdominal pain and upper gastrointestinal bleeding. Endoscopy demonstrated a posterior duodenal wall perforation communicating with a solid retroperitoneal neoformation. Endoscopic biopsy was performed, with a final report of ES. The patient was submitted for surgical palliation due to the tumor’s unresectability. Retroperitoneal ES is an extremely rare condition with limited reports in the literature where guidelines for its optimal treatment are not well established.

Keywords: Epithelioid sarcoma, Retroperitoneal, Mesenchymatous neoformation, Duodenal perforation, Endoscopy

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.