Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Bibasilar opacities are seen , which could be due to atelectasis , aspiration , infection not excluded . No pleural effusion is seen . There is no pneumothorax . The cardiac silhouette is top normal . Mediastinal contours are unremarkable .
    OUTPUT:
    
Bibasilar opacities which may be due to atelectasis , aspiration , infection not excluded .