Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright frontal view of the chest . There is bibasilar atelectasis . Right , greater than left , air space opacities represent mild to moderate pulmonary edema . The patient is rotated which makes evaluation of the mediastinum difficult ; however , it appears widened . The heart is mildly enlarged . There is no large pleural effusion or pneumothorax . No acute osseous abnormality is seen .
    OUTPUT:
    
Mild - to - moderate pulmonary edema . Widened of the mediastinum . Followup radiograph is recommended once the patient is stable .