Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube is well - positioned . Nasoenteric tube ends in the stomach . There is upper lobe predominant lung opacity . There is no pleural effusion or pneumothorax . Heart size is normal .
    OUTPUT:
    
1 . Appropriately positioned lines and tubes . 2 . Biapical lung opacity , findings concerning for atypical edema versus infection .