Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP chest film ___ at 08 : 56 is submitted .
    OUTPUT:
    
Endotracheal tube and nasogastric tube are unchanged in position . There are increasing bibasilar opacities suggestive of atelectasis , although superimposed pneumonia can not be excluded . Prominent pulmonary arteries raising the possibility of underlying pulmonary arterial hypertension . There are small layering effusions . The heart remains enlarged . Mediastinal contours are likely stable given differences in patient positioning . No overt pulmonary edema . No large pneumothorax is seen , although the sensitivity to detect pneumothorax is diminished given supine technique . Multiple calcified nodes within the neck unchanged .