Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Linear left basilar opacities most likely atelectasis . The lungs are otherwise clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities . Free intraperitoneal air is compatible with recent laparoscopic surgery .
    OUTPUT:
    
No acute cardiopulmonary process . Free intraperitoneal air compatible with recent surgery .