Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient has had median sternotomy and aortic valve replacement . Right ventricular pacemaker lead follows the expected course from the right pectoral pacemaker . There is no pulmonary edema or pleural effusion . Mild cardiomegaly is chronic . Lungs are clear .
    OUTPUT:
    
No radiographic evidence of acute cardiopulmonary abnormality .