Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Bilateral diffuse opacities are compatible with pulmonary edema . There may be superimposed bibasilar atelectasis . A moderate hiatal hernia is redemonstrated . The mediastinum appears widened , but this is felt to be secondary to right lateral rotation of the patient 's position rather than a true increased mediastinal widening . Blunting of the right costophrenic angle is unchanged since at least ___ , likely representing scarring . Right lateral deviation of the trachea is secondary to goiter . Pacemaker is seen projecting over the left hemithorax with the leads in expected position .
    OUTPUT:
    
1 . Findings compatible with pulmonary edema . 2 . Bibasilar opacities may represent atelectasis , although superimposed infection can not be excluded . 3 . Apparent widening of the mediastinum is felt to be secondary to patient 's rotation rather than a pathologic process . Further assessment with PA and lateral radiographs with optimal positioning of the patient is recommended . If high clinical concern for acute aortic injury and findings persist , chest CT would also further evaluate .