Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette quite enlarged , although likely in part exaggerated by supine position and AP technique . No focal consolidation is seen . There may be left base atelectasis . No large pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Enlarged cardiac silhouette could be due to cardiomyopathy however underlying pericardial effusion is not excluded . No definite focal consolidation .