Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is interval reaccumulation of moderate - to - large left pleural effusion with compressive atelectasis of left lung base . Trace right pleural effusion is present . A large mass in the anterior right lung base , likely a pulmonary or pleural mass , is unchanged . Cardiomediastinal and hilar contours are within normal limits . A right chest wall Port - A - Cath tip terminates in the lower SVC .
    OUTPUT:
    
Interval reaccumulation of moderate - to - large left pleural effusion with compressive atelectasis of the left base .