Osteochondroma - femur

Case contributed by Ammar Haouimi
Diagnosis almost certain

Presentation

Hard lump of the medial aspect of the distal left thigh.

Patient Data

Age: 30 years
Gender: Female
mri

Pedunculated bony mass arising from the medial aspect of the distal femoral metaphysis. The cortex as well as the medullary cavity are in continuity with those of the parent bone with thinning of the cortex. No fracture or adjacent soft tissue mass is seen

On the ultrasound (not shown) the cartilage cap was at 5 mm in thickness. 

Case Discussion

CT features of an osteochondroma of the distal femoral metaphysis (commonest location).

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