Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low accentuating the pulmonary vascular structures , with bibasilar atelectasis , greater on the right , however , left basilar pneumonia can not be excluded . Cardiomegaly is stable . Aortic arch calcifications are again noted . There is no large pleural effusion , overt pulmonary edema , or pneumothorax . Biapical pleural thickening again noted .
    OUTPUT:
    
Low lung volumes , with bibasilar atelectasis , greater on the right , however , left basilar pneumonia can not be excluded . Stable cardiomegaly .