Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A pacemaker defibrillator is noted with right atrial and biventricular leads in expected positions . The cardiomediastinal and hilar contours are stable . There is no pleural effusion or pneumothorax . Lung volumes are slightly low with resultant bronchovascular crowding . There is no pulmonary edema or focal consolidation concerning for pneumonia . Extensive DISH changes are noted throughout the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process .