Retroperitoneal blue cell round tumor (Ewing sarcoma in a 35 years old male)- case report.

Introduction: Ewing sarcoma is a highly aggressive tumor. It's common presentation is primary bone tumor, but very rarely as soft tissue sarcoma both of which are under the spectrum of Ewing sarcoma family of tumors (EFT).

Case Presentation: A 35 years old male who presented with advanced locally spreading tumor.