Extraosseous Ewing’s Sarcoma Presented as a Rectal Subepithelial Tumor: Radiological and Pathological Features

Ewing’s sarcoma is a relatively rare, small round cell sarcoma that shows unique molecular findings and various degrees of neuroectodermal differentiation (1). It arises in the bones most frequently, but approximately 10-20% of cases are extraskeletal (1). EOE most commonly occurs in children and young adults and typically involves the extremities, paravertebral region, retroperitoneum, and chest wall (2). To the best of our knowledge, only three cases of EOE arising from the rectum have been reported in the This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/ by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Received: February 5, 2017 Revised: March 16, 2017 Accepted: March 20, 2017