Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Opacity at the left cardiophrenic angle is compatible with a prominent fat pad . The lungs are otherwise clear noting low lung volumes . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities . Surgical clips in the right upper quadrant suggest prior cholecystectomy .
    OUTPUT:
    
No acute cardiopulmonary process .