Pediatric Patient with a Diagnosis of Pelvic Extraosseous Ewing's Sarcoma: A Case Report.

Ewing's sarcoma (ES) is a malignant tumor that arises mainly from bone tissue. Primary extraosseous Ewing sarcoma (EES) is a rare form of the Ewing's sarcoma family of tumor, and pelvic localization is even more unusual, considered to be one of the rarest localizations [1]. We present the case of a seven-year-old boy with persistent abdominal pain.