Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly is redemonstrated , and unchanged . The patient is status post aortic and mitral valve replacement . The left atrium remains dilated . Mediastinal and hilar contours are unchanged . Lungs are clear and the pulmonary vascularity is normal . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality .