Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Mediastinal and hilar contours are unchanged . There is mild pulmonary vascular congestion but no frank pulmonary edema . Eventration of the right hemidiaphragm is chronic . Streaky patchy opacities in both lung bases likely reflect atelectasis . No pleural effusion or pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
Streaky bibasilar airspace opacities likely reflecting atelectasis .