Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the chest CT obtained 1 day prior , moderate right pleural effusion is improved . There is a new , right sided pigtail catheter with a tiny apical pneumothorax . Right upper lobe consolidation is probably unchanged , but better appreciated on recent CT chest . Complete opacification of the left hemithorax with rightward mediastinal shift is unchanged and consistent with known massive pleural effusion . Large pericardial effusion also better appreciated on recent CT chest .
    OUTPUT:
    
Right pleural effusion markedly improved . Small right apical pneumothorax . Complete opacification of left hemithorax consistent with known , massive pleural effusion .