Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right heart border is obscured by the elevated right hemidiaphragm . Again seen are persistent coarse reticular opacities in the right upper and right middle lobes , likely secondary to residual tumor and / or radiation fibrosis . Widened mediastinum is consistent with extensive lymphadenopathy . There has been significant interval improvement of the large right pleural effusion compared to the recent CT ; however , with residual elevation of the right hemidiaphragm . The left lung appears clear . There is no evidence of pneumothorax . There is a left - sided Port - A - Cath which terminates in the cavoatrial junction .
    OUTPUT:
    
1 . Significant interval improvement of the large right pleural effusion compared to the CT from ___ . No evidence of a pneumothorax . 2 . Persistent elevation of the right hemidiaphragm may be secondary to subpulmonic fluid , phrenic nerve palsy , radiation fibrosis and / or volume loss .