Perspectives in Medical Research

Abstract

Introduction: Osteochondromas represent the most common primary bone neoplasms. They probably are developmental malformations rather than true neoplasm and are thought to originate within the periosteum as small cartilaginous nodules. The lesions consist of a bony mass, often in the form of a stalk, produced by progressive endochondral ossification of a growing cartilaginous cap. They are commonly found in the metaphysis of long bones near the physis. Most commonly seen on the distal end of femur, proximal tibia, and proximal humerus most commonly on posterolateral area. Malignant degeneration is extremely rare. Here we present a rare case of osteochondroma in a 22 years male patient arising from the diaphysis of proximal humerus on anteromedial side, extending till brachial plexus and causing ulnar nerve impingement. It was resulting in dragging type of pain which was radiating towards right shoulder with numbness over the medial aspect of the arm and ulnar aspect of the forearm.