Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate enlarged cardiac silhouette due to moderate to severe cardiomegaly and / or pericardial effusion . Otherwise normal mediastinal and hilar contours . Clear lungs , no pleural effusion or pneumothorax .
    OUTPUT:
    
Moderate to severe cardiomegaly and / or pericardial effusion . Telephone notification to Dr . ___ by Dr . ___ at 6 : 40 a .m . on ___ at time of review of the study .