Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate low lung volumes resulting in a prominent cardiac silhouette and bronchovascular crowding . Mildly increased right infrahilar opacity has a possible correlate on lateral view , and may represent atelectasis , but an early developing pneumonia can not be excluded . There is no pleural effusion or pneumothorax . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
1 . Mildly increased right infrahilar opacity has a possible correlate on lateral view . Although this may represent atelectasis , an early developing pneumonia can not be excluded . 2 . Low lung volumes resulting in prominence of the cardiac silhouette and bronchovascular crowding .