Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior study , the ET tube and NG tubes have been removed . A right IJ central line tip overlies the proximal most SVC near the confluence with the subclavian . Left - sided chest tube remains present . No pneumothorax is detected . Knee cardiomediastinal silhouette is prominent but unchanged and likely accentuated by low inspiratory volumes . Patchy opacity at both lung bases is similar to the prior film could be accounted for by atelectasis , but an associated pneumonic infiltrate would be difficult to exclude . Mild vascular moderate vascular plethora is likely accentuated by low lung volumes . No gross effusion .
    OUTPUT:
    
No pneumothorax detected .