Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate normal lung volumes . There is no pleural effusion or pneumothorax . Hilar and mediastinal silhouettes are unremarkable . Heart size is normal . Bibasilar patchy and linear opacities are noted . Multiple remote left - sided rib fractures are seen . There is a large hiatal hernia . No pulmonary edema .
    OUTPUT:
    
1 . Bibasilar opacities , which may represent atelectasis , aspiration or infection in the appropriate clinical setting . 2 . Hiatal hernia .