Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate asymmetric opacity at the left base and the left perihilar region , concerning for aspiration . There is also likely a component of left lower lobe atelectasis . Cardiac and mediastinal contours are unchanged and the right lung is clear . No pneumothorax is seen .
    OUTPUT:
    
Left perihilar and basilar opacities concerning for aspiration with left lower lobe atelectasis as well .