Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a large right - sided pleural effusion with adjacent atelectasis , better characterized on the CT examination of the abdomen performed on the same day . The aerated , upper portion of the right lung is grossly unremarkable . The left lung is clear and without focal consolidation , pleural effusion , pneumothorax , or pulmonary edema . The heart size is normal . Mediastinal and hilar contours are normal .
    OUTPUT:
    
Large , right - sided pleural effusion with adjacent atelectasis .