Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable chest radiograph demonstrates unchanged mediastinal , hilar , and cardiac contours . A right - sided subclavian catheter whose tip at the cavoatrial junction . Lungs are clear . No pleural effusion or pneumothorax evident . On this non-dedicated rib series , no grossly displaced rib fractures evident .
    OUTPUT:
    
Unchanged exam . No rib fractures evident .