Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Streaky left retrocardiac opacity most likely represents atelectasis . There is otherwise no focal consolidation , pleural effusion or pneumothorax . Heart size is mildly enlarged . Atherosclerotic calcifications are noted in the aortic arch . There is no evidence of acute fracture . There is bilateral glenohumeral and acromioclavicular joint osteoarthritis .
    OUTPUT:
    
No acute cardiopulmonary process .