Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube ends above the level of the carina . Right IJ central venous catheter ends in the right atrium . There is no evidence of pneumothorax . Lung volumes are lower than prior . There is increased opacification of the bilateral lung apices compared to prior , which may represent atelectasis . Bibasilar opacities are again seen . A nasoenteric tube enters the stomach .
    OUTPUT:
    
No evidence of pneumothorax . Increased opacification at the bilateral lung apices , possibly secondary to atelectasis .