Extraskeletal Ewing's Sarcoma/Primitive Neuroectodermal Tumor presenting as a breast mass is uncommon. It may pose a diagnostic challenge. In order to increase awareness and identify potential diagnostic pitfalls, we report a 24 year-old woman extraosseous Extraskeletal Ewing's Sarcoma/Primitive Neuroectodermal Tumor arising in the breast.

UNLABELLED A 75-year-old long-term male smoker and poorly controlled hypertensive presented with a 3-month history of intermittent epistaxis refractory to cauterisation with silver nitrate. Nasopharyngeal examination revealed a mass in the post nasal space. An urgent endoscopic biopsy confirmed an extraosseous plasmacytoma. Post operative radiotherapy was scheduled. No evidence of recurrence of...

Ewing's sarcoma (ES) is the second most common malignant bone tumor in children and young adults. ES also occurs as a primary soft tissue neoplasm without involvement of bone. We report the second case of extraosseous (EO) ES emerging from the omentum and a review of the relevant literature. EO ES should be included in the differential diagnosis of soft tissue neoplasms in the abdomen.