False aneurysm of the popliteal artery revealing a solitary osteochondroma of the distal femur in an 11-year-old boy.

An 11-year-old boy presented with pain in the right knee, intermittent reverse ischemia of the right foot and paraesthesia of the right toes. An angio-CT showed a false aneurysm of the right superior popliteal artery, and a solitary osteochondroma of the posterior aspect of the distal femur. Excision of the aneurysm and the osteochondroma was performed in two-stages. The patient was clinically well at 1-year follow up.