Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size remains mildly enlarged with a left ventricular predominance . Diffuse atherosclerotic calcifications are seen within the aorta . Mediastinal and hilar contours are unremarkable . There are low lung volumes with crowding of the bronchovascular structures . No focal consolidation , pleural effusion or pneumothorax is seen . Multilevel moderate degenerative changes are noted in the thoracic spine . Partially imaged is a left humeral head prosthesis .
    OUTPUT:
    
Low lung volumes . No acute cardiopulmonary abnormality .