Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is top normal . The aorta is diffusely calcified . Mediastinal and hilar contours are unremarkable . Lung volumes are low . Crowding of bronchovascular structures is demonstrated without overt pulmonary edema . Patchy atelectasis seen in the lung bases . No focal consolidation , pleural effusion or pneumothorax is present . Marked degenerative changes are seen in both glenohumeral joints .
    OUTPUT:
    
Lung volumes are low with bibasilar atelectasis .