Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unchanged . Pulmonary vasculature is not engorged . Patchy opacities are noted in the lung bases most likely reflective of atelectasis . No pleural effusion or pneumothorax is identified . Clips are seen about the gastroesophageal junction . Degenerative changes are noted involving the glenohumeral joints bilaterally with amorphous calcifications superolateral to the right humeral head suggestive of calcific tendinopathy .
    OUTPUT:
    
Patchy bibasilar opacities , likely atelectasis .