Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . The mediastinal and hilar contours are unchanged . Lungs are hyperinflated with emphysematous changes again noted at the lung apices . There is no frank pulmonary edema , though there may be mild pulmonary vascular congestion . Streaky retrocardiac opacity could reflect atelectasis . Infection can not be excluded . No pleural effusion or pneumothorax is present . Marked degenerative changes of both glenohumeral joints are noted with a high riding right humerus suggestive of rotator cuff disease .
    OUTPUT:
    
Retrocardiac patchy opacity , possibly atelectasis . Infection is not excluded in the correct clinical setting . Mild pulmonary vascular congestion .