Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright view of the chest demonstrates bibasilar opacities , which are new since prior exam , concerning for infection . No pleural effusion or pneumothorax . Perihilar vascular congestion . Hilar and mediastinal silhouettes are otherwise unchanged . Heart size is normal . Low lung volumes .
    OUTPUT:
    
Bibasilar opacities concerning for infection , new since ___ exam . Repeat radiograph following resolution of the symptoms is recommended .