Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low , causing exaggeration of the heart size and accentuation of the pulmonary vasculature . There is subsegmental bilateral lower lung atelectasis . The heart is top normal in size . The mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen . There is no free air under the diaphragm . Scattered non-dilated loops of small bowel within the anterior abdomen demonstrate small air - fluid levels , best seen on the lateral projection , nonspecific in nature .
    OUTPUT:
    
1 . Low lung volumes . Minimal bibasilar atelectasis . 2 . No free air under the diaphragm .