Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest are compared to previous exam from ___ . Lower lung volumes seen on the current exam . Bibasilar opacities , left greater than right are most suggestive of atelectasis . There is no large confluent consolidation or evidence of congestive failure . Cardiac silhouette is enlarged but stable given differences in positioning and technique . Nephrostomy tubes are partially visualized . Osseous and soft tissue structures are otherwise unremarkable .
    OUTPUT:
    
No definite acute cardiopulmonary process .