Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to the previous examination , there is no relevant change . Moderate to severe right pleural effusion with unchanged distribution , better appreciated on the lateral than on the frontal radiograph . Minimal left pleural effusion . Subsequent areas of atelectasis at the right lung base is that are unchanged in extent . Unchanged moderate cardiomegaly , without current signs of overt pulmonary edema . The left lung appears unremarkable . There is no evidence of acute lung parenchymal disease such as pneumonia . The mediastinal contours are constant .
    OUTPUT:
    
Unchanged right pleural effusion with subsequent areas of atelectasis , unchanged cardiomegaly without overt pulmonary edema . Minimal left pleural effusion .