CASE 14: XRAY FEMUR

13 years old girl,pain and swelling left thigh after a trivial injury

X-Ray reveals an illdefined lytic area in the femoral diaphyseal aspect, with cortical destruction, periosteal reaction, wide zone of transition, and soft tissue component.

Diagnosis

Ewing's Sarcoma

RAD PEARLS

Belongs to PNET group of tumors

Femur is the most common site

Common in age group 10-20 years

Aggressive with wide zone of transition, Onion ring appearance of periosteal reaction may be present.