Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy , CABG , with dense mitral annular calcifications again noted . Mild to moderate cardiomegaly is unchanged . The thoracic aorta is diffusely calcified . Small hiatal hernia is noted . Mediastinal and hilar contours are otherwise unremarkable . Pulmonary vasculature is not engorged . No focal consolidation , pleural effusion or pneumothorax is present . The osseous structures are diffusely demineralized . Partially imaged is a vascular stent within the left upper extremity .
    OUTPUT:
    
No acute cardiopulmonary abnormality .