Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There relatively low lung volumes . Bibasilar atelectasis is seen . Bibasilar opacities may be due to atelectasis although underlying mild aspiration is not excluded . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable . No evidence of free air beneath the diaphragms .
    OUTPUT:
    
Relatively low lung volumes and bibasilar atelectasis . Mild basilar aspiration not excluded . No evidence of free air beneath the diaphragms .