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Osteosarcoma

Case contributed by Henry Knipe
Diagnosis almost certain

Presentation

Leg pain.

Patient Data

Age: 12 years
Gender: Male
x-ray

Multicentric lucencies within the distal femoral diaphysis and metaphysis. Ill-defined margins with periosteal reaction and Codman triangle formation. 

Case Discussion

This bone lesion has aggressive features and was subsequently resected and shown to be osteosarcoma. 

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