Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Unchanged severe chronic cardiomegaly and prominence the pulmonary vasculature . Lung volumes are low narrowing with significant atelectasis at the lung bases . Mild pulmonary edema . No pneumothorax .
    OUTPUT:
    
Severe chronic cardiomegaly . Mild pulmonary edema . No evidence of pneumonia .