Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate to severe cardiomegaly is unchanged . The mediastinal and hilar contours are stable . There is no pulmonary vascular engorgement . Moderate size right pleural effusion is relatively unchanged compared to the prior study with a trace left pleural effusion also again noted . There is worsening opacification in the right lung base , which could reflect atelectasis though infection can not be excluded . Retrocardiac atelectasis is also be demonstrated . No pneumothorax is identified .
    OUTPUT:
    
Moderate size right and small left pleural effusions . Worsening opacification in the right lung base could reflect compressive atelectasis though infection is difficult to exclude . Retrocardiac atelectasis .