Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well inflated and clear . The cardiomediastinal silhouette , hilar contours , and pleural surfaces are unchanged , particularly prominence of the superior right mediastinum which is likely due to tortuosity of the brachiocephalic vessels . There is no pleural effusion or pneumothorax . Degenerative changes are present in the thoracic spine . Calcific densities are again seen at the left glenohumeral joint , likely representing loose bodies .
    OUTPUT:
    
No acute cardiopulmonary process .