Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate extensive bibasilar atelectasis , worse on the left , with no evidence of pneumonia . The cardiomediastinal contours are normal , and no pleural abnormality . Of note , a gas - distended stomach in the left upper quadrant .
    OUTPUT:
    
Bibasilar atelectasis , worse on the left , with no evidence of pneumonia .