Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right lung base opacity , reflecting pneumonia and / or atelectasis , is slightly improved since the ___ study . A previously - seen small left pleural effusion is no longer visualized . No pneumothorax is detected . A right IJ line , endotracheal tube , and orogastric tube are unchanged in position . The hilar and mediastinal contours are unchanged .
    OUTPUT:
    
1 . Continued improvement of a right basilar opacity . 2 . Small left pleural effusion has resolved .