Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval development of air - fluid level within the right lower lobe , with large amount of pleural effusion since ___ . No definite pneumothorax is seen 5 and linear configuration of the fluid is suspicious for a hydropneumothorax . The left lung is clear without focal consolidation . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Interval development of hydrothorax with what appears to be an air - fluid level . Recommend correlation with any prior interventions . If clinically relevant , chest CT can be obtained for confirmation .