Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a new pericardial drainage catheter , with its tip positioned over the right heart border . A right sided Port - A - Cath ends in the low SVC , unchanged compared to the recent CT from ___ . Enlargement of the cardiac silhouette has substantially increased compared to the most recent radiograph from ___ , likely decreased compared to the recent CT from ___ . There are no pleural effusions . No pneumothorax . The lungs are clear . High density material in the colon relates to prior oral contrast administration for the recent CT .
    OUTPUT:
    
1 . No pneumothorax . 2 . Probable slight decrease in size of pericardial effusion compared to the chest CT from ___ , status post placement of a pericardial drain . No evidence that the residual effusion is hemodynamically significant .