Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable supine frontal image of the chest . The ET tube is in adequate position . The OG tube passes into the stomach and off of the image inferiorly . The lungs are well expanded . Mild pulmonary edema is seen . Opacities are seen in the bilateral lung bases , which may represent atelectasis , but can not excluded pneumonia or aspiration in the right clinical setting . The left costophrenic angle is not included on this exam , but there are bilateral small pleural effusions . No pneumothorax is seen . The cardiomediastinal silhouette is very enlarged .
    OUTPUT:
    
1 . OG tube in adequate position . 2 . Mild pulmonary edema . 3 . Opacities in the bilateral lung bases , which may represent atelectasis , but can not excluded pneumonia or aspiration in the right clinical setting . 4 . Moderate to severe cardiomegaly .