Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal view of the chest was obtained . Lung volumes are low . Accounting for difference in inspiratory effort , severe cardiomegaly is similar to the prior exam . Pulmonary vascular markings are likely accentuated by low lung volumes . No focal consolidation , pleural effusion , or pneumothorax . No radiopaque foreign body .
    OUTPUT:
    
1 . Low lung volumes . 2 . Stable severe cardiomegaly .