Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . There is blunting of lateral costophrenic angles suggesting underlying effusions . Right greater than left basilar opacities may be due to atelectasis . Superiorly , the lungs are clear . The cardiomediastinal silhouette is within normal limits . Drain identified in the right upper quadrant as well as cholecystectomy clips . No visualized free intraperitoneal air .
    OUTPUT:
    
Bibasilar opacities likely in part due to atelectasis and effusions noting that infection can not be excluded .