Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low resulting in bronchovascular crowding and exaggerating chronic general enlargement of the cardiomediastinal silhouette . However , no confluent consolidation is identified to suggest pneumonia . There is no pulmonary vascular congestion or overt interstitial edema . No pneumothorax or pneumomediastinum is noted .
    OUTPUT:
    
Low lung volumes without definite pneumonia . Chronic moderate cardiomegaly .