Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are compared to previous exam from ___ . The lungs are clear . There is no evidence of pulmonary vascular redistribution or effusion . The cardiac silhouette is enlarged , potentially more so than on prior exam . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
Interval enlargement of the cardiac silhouette potentially due to enlarging pericardial effusion and underlying cardiomegaly . No other change .