Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to prior chest x-ray , there has been interval increase in size of the right - sided pleural effusion although given differences in technique it has not dramatically changed since interval CT scan . The right pleural catheter is in unchanged position . There is no visualized pneumothorax . The left lung remains clear without consolidation or effusion . Cardiomediastinal silhouette is difficult to assess .
    OUTPUT:
    
Large right pleural effusion which given differences in technique is not significantly changed since recent CT scan . Underlying consolidation due to some combination of atelectasis and known mass is difficult to assess . Superimposed infection can not be excluded .