Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is enlarged , consistent with known pericardial effusion . There is a pericardial drain overlying the heart . Known left upper lobe spiculated mass , seen on outside chest CT , can not be visualized on this examination . Blunting of the left costophrenic angle is related to a small pleural effusion . There is mild atelectasis at the right lung base . The right lung is otherwise clear .
    OUTPUT:
    
1 . Cardiomegaly , consistent with known pericardial effusion . 2 . Left upper lobe mass identified on prior outside chest CT can not be visualized on this examination .