Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Semi-upright portable chest radiograph excludes the left hemidiaphragm , limiting evaluation . There is bibasilar opacity , new compared with the prior study . The cardiac silhouette is normal . The mediastinum appears widened , which may be due to portable technique , with unfolding of the thoracic aorta . No pulmonary edema , pleural effusion , or pneumothorax .
    OUTPUT:
    
Probable bibasilar atelectasis , though study is limited due to technique . Recommend repeat frontal and lateral chest radiographs in the radiology department when the patient is stable .