Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . There is a moderately - sized probably loculated right pleural effusion , which is worse compared to the prior study of ___ . It occupies approximately ___ % of the right hemithorax . Atelectasis is noted at the left lung base . There is no pneumothorax bilaterally . Heart size remains enlarged . Patient is status post right shoulder arthroplasty . Spinal fusion hardware is noted in the cervical spine . There are bilateral old rib fractures .
    OUTPUT:
    
Worsening probably loculated right pleural effusion , which occupies approximately ___ % of the right hemithorax . No evidence of pneumonia in the remaining areas of well ventilated lung .