Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided dual - chamber pacemaker device is noted with leads terminating in unchanged positions in the right atrium and right heart . Moderate enlargement of the cardiac silhouette with dense mitral annular calcifications is re - demonstrated . The aorta is mildly tortuous and diffusely calcified . The mediastinal and hilar contours are otherwise similar . Known pulmonary nodules seen on CT are not well assessed on the current exam . There is no pulmonary edema , focal consolidation , pleural effusion or pneumothorax . Patient is status post vertebroplasty of the T12 vertebral body with fusion hardware within the lumbar spine incompletely imaged . Multiple chronic bilateral rib fractures are better assessed on the previous CT . Right shoulder arthroplasty hardware is also incompletely assessed .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Multiple bilateral chronic rib fractures and T12 compression fracture status post vertebroplasty .