Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low volumes are low . Bibasilar opacities could represent atelectasis , pneumonia , or aspiration . There is no effusion or pneumothorax . The mediastinum is widened . Pulmonary arteries are enlarged . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen . ET tube tip is approximately 4 .3 cm above the carina . Side port of the NG tube is near the GE junction .
    OUTPUT:
    
1 . Bibasilar opacities could represent atelectasis , pneumonia , or aspiration . 2 . The mediastinum is widened . Repeat PA and lateral chest radiographs are recommended when the patient is able to tolerate the exam . 3 . Enlarged pulmonary arteries