Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Transdermal pacing pads are in place . The heart size is within normal limits . The mediastinal and hilar contours are normal . The lungs are clear . There is no pleural effusion or pneumothorax . The sagittal diameter of the chest is very narrow .
    OUTPUT:
    
No acute cardiopulmonary process . Narrow sagittal chest may predispose to mitral regurgitation .