Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size appears moderately enlarged , but is accentuated due to the presence of low lung volumes . The aorta is tortuous . There is mild pulmonary edema with small to moderate sized bilateral pleural effusions , not substantially changed from the prior exam . Bibasilar opacities may reflect compressive atelectasis but infection can not be completely excluded . No pneumothorax is identified . Severe degenerative changes are noted in both glenohumeral joints with narrowed acromiohumeral intervals bilaterally suggestive of underlying rotator cuff disease . No displaced fractures are visualized .
    OUTPUT:
    
Low lung volumes . Mild pulmonary edema with small to moderate size bilateral pleural effusions . Bibasilar airspace opacities , likely atelectasis , but infection can not be completely excluded .