Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . The cardiomediastinal silhouette and hilar contours are normal . No pleural effusion or pneumothorax is present . Note is made of obscuration of the spine on the lateral view related to known hiatal hernia . A left nephrostomy tube is noted in unchanged position .
    OUTPUT:
    
No acute intrathoracic process .