Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Area of opacity in the right lung base is likely atelectasis . Left lung base atelectasis is improved compared to ___ . Pleural effusion is minimal , if any . Mild pulmonary vascular congestion is noted . Moderately enlarged cardiac silhouette is similar to prior . Right Dual channel dialysis catheter terminates in and right atrium .
    OUTPUT:
    
Area of opacity in the right lung base is likely atelectasis . Pneumonia is possible in correct clinical setting .