Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are unchanged . There has been interval placement of a right - sided pigtail catheter . Opacification of the right mid and right lower lung is consistent with a large loculated pleural effusion , and atelectasis as described on recent chest CT from ___ . Superimposed infection can not be excluded . There is minimal atelectasis at the left base . No pleural effusion on the left side . No evidence of pneumothorax .
    OUTPUT:
    
Opacification of the right mid and right lower lung is consistent with a large loculated pleural effusion and collapse . Superimposed infection can not be excluded .