There is a large lytic lesion involving the majorty of the scapular body, scapular spine and coracoid process. The lesion is poorly defined but expansile, and demonstrates extension into the surrounding soft tissues superiorly, anteriorly and posteriorly. There are thin whispy septations of calcific density scattered throughout the mass. There is a thin preserved area of articular glenoid bone, along with the vertebral border of the scapula, inferior angle and a portion of the axillary border, and the acromion process. There is no periosteal reaction observed. The clavicle, humerus and chest wall appear uninvolved.