Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Pneumoperitoneum reflects the previous day 's cholecystectomy . Lung volumes are low . Linear opacities at the lung bases are likely atelectasis . There is no focal consolidation , pleural effusion or pneumothorax . Heart and mediastinal slight is likely exaggerated due to poor inspiration . Cholecystectomy clips are noted within the right upper quadrant .
    OUTPUT:
    
1 . Expected pneumoperitoneum and bibasilar atelectasis 1 day a after cholecystectomy .