Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate interval increase in cardiac silhouette in patient with known severe cardiomegaly . Finding may represent worsening of the same versus pericardial effusion . There is a small right pleural effusion . Faint retrocardiac opacification likely reflects atelectasis . Remainder of the lungs is clear .
    OUTPUT:
    
Interval increase in size of cardiomegaly in patient with severe cardiomegaly may relate to new pericardial effusion . No overt failure . New small right pleural effusion .