Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mildly enlarged . Mediastinal and hilar contours are normal . There is no pulmonary edema . No focal consolidation , pleural effusion or pneumothorax is seen . Minimal streaky retrocardiac and right basilar opacities likely reflect atelectasis . Mild degenerative changes are seen within the thoracic spine . Clips are seen within the right axillary region .
    OUTPUT:
    
Mild bibasilar atelectasis .