An extraskeletal EwingÓ?s sarcoma: a challenging diagnosis with several approaches in a young woman

Extraskeletal Ewing's sarcoma is an unusual primary tumor of the deep soft tissues.Clinically, skin lesions are usually fastgrowing and aggressive, with a risk of metastasis, and are more common in the paravertebral region and lower limbs.The ultimate diagnosis is made by anatomopathological study.This report describes the case of a 21-year-old patient with a tumor on her right flank that had been present for the past 2 months.She underwent surgery in an emergency department and progressively became more ill.