Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest is compared to previous exam from ___ . Lower lung volumes are seen on the current exam . The rest of the lungs are grossly clear . Cardiomediastinal silhouette is within normal limits . Osseous and soft tissue structures are unremarkable . There is no free air identified below the diaphragm .
    OUTPUT:
    
No definite acute cardiopulmonary process given low lung volumes . No visualized free intraperitoneal air below the diaphragm .