Intrabursal vein abrasion and thrombosis: an unusual complication of femoral osteochondroma

A 21-year-old female with right distal femoral pedunculated osteochondroma is presented. She was admitted for severe lower limb pain, and swelling of one week duration. Clinical findings supported deep vein thrombosis [DVT] but Doppler ultrasound, and venography were normal. Surgical exploration revealed a large bursa around the tumor with a big vein abraded and thrombosed inside the bursa