Osteochondroma - distal femur

Case contributed by Jeremy Jones
Diagnosis certain

Presentation

Lump on the internal aspect of the distal right thigh.

Patient Data

Age: 14 years
Gender: Male
x-ray

A large pedunculated osteochondroma extends from the medial surface of the right distal femoral metaphysis. No fracture is evident.

Case Discussion

Osteochondromas are benign bone lesions with malignant potential.  Malignancy develops from the cartilaginous cap and can be assessed with ultrasound or MRI.

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