Giant osteochondroma lower end of femur-a case report

Abstract

A 15 year old boy presented with à painful non mobile, bony hard swelling of lower end of left femur of 4 years duration. The swelling was present since 4 years with progressive increase in size of the swelling and pain on knee movements since last 1 year. Clinical examination revealed a bony hard swelling arising from medial aspect of lower end of femur away from the knee joint. The swelling was painful on knee flexion of more than 90 degrees . XRays revealed a giant pedunculated exostosis arising from lower end of femur with a fungating mass at the cartilaginous cap abutting the skin. A diagnosis of giant exostoses lower end femur with possible malignant transformation was made. In view of sudden increase in size of the lesion and associated pain on knee movements, and mechanical obstruction Patient underwent surgical excision of the exostoses .Histopathology revealed no malignant transformation.