Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is chronic moderate to severe cardiac enlargement . Pulmonary edema and pulmonary vascular congestion are redemonstrated . There is atelectasis at the left lung base . No focal pulmonary abnormality is identified to suggest pneumonia . There is no pneumothorax or large pleural effusion .
    OUTPUT:
    
Chronic moderate to severe cardiac enlargement , consistent with cardiomegaly and / or pericardial effusion . Stable pulmonary edema and pulmonary vascular congestion . No focal pulmonary abnormality to suggest pneumonia .