Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . New left lung base opacity is concerning for aspiration or pneumonia . No pleural effusion or pneumothorax . Hilar and cardiomediastinal contours are normal . A moderate hiatal hernia is stable .
    OUTPUT:
    
1 . New left lung base opacity is concerning for aspiration or pneumonia . 2 . Moderate hiatal hernia is stable .