Osteochondroma of lateral clavicle: A rare case report

Abstract

Osteochondromas arising from the clavicle are extremely rare and symptomatic cases are even less common. We report a case of large solitary osteochondroma of lateral end clavicle in a 18 year old male. Range of motion of the affected shoulder was restricted with loss of overhead forward flexion, abduction and decrease internal rotation by 15-20 degrees. Radiographs indicated osteochondroma. After excision near normal range of motion of shoulder was restored. Osteochondroma although arise in bones developing through endochondral ossification, its growth on the clavicle (membranous ossification) makes it a rare occurrence. Furthermore, the growth of the tumor in spite of its benign nature after skeletal maturity differs from its usual presentation. This case report is yet another example to show that tumors can present with varied presentations and locations.