Parto Teb Azma

History (HX): Female   15 yr

Findings:
There is a large destructive mass at distal femoral metadiaphysis. Cortical destruction and extensive periosteal reaction with sunburst appearance are present. The mass is in close proximity with neurovascular bundle.

Diagnostic (DX):
Malignant small round cell tumor more probably Ewing sarcoma (proved)