Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left chest wall pacer defibrillator has leads terminating in the right atrium and right ventricle as well as epicardial leads on the left ventricle . The lungs are slightly hyperexpanded with flattening of the hemidiaphragms similar to the prior study . The heart is not enlarged . The mediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax . There is no focal airspace opacity to suggest pneumonia and no evidence of pulmonary edema .
    OUTPUT:
    
No acute cardiopulmonary abnormality . No evidence of pneumonia or pulmonary edema .