Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are relatively low but the lungs are grossly clear without obvious consolidation . Cardiac silhouette is slightly enlarged but this is likely in part due to AP technique and low lung volumes . Severe degenerative changes noted at the shoulders bilaterally , worse on the left . No acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes without definite acute cardiopulmonary process .