Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest is compared to previous exam from ___ . Right chest wall port is seen with catheter tip at the RA - SVC junction . Low lung volumes are again noted . Retrocardiac opacity may be due to atelectasis . Cardiomediastinal silhouette is within normal limits . Osseous and soft tissue structures are grossly unremarkable . There is no visualized free air below the diaphragm on this portable examination .
    OUTPUT:
    
No definite acute cardiopulmonary process . No definite free intraperitoneal air based on this portable exam .