Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and cardiac valve replacement . The cardiac silhouette remains top - normal to mildly enlarged . The aorta is calcified and tortuous . On the lateral view , there may be mild dilatation of the ascending aorta to 4 cm , although not optimally evaluated on this radiograph study . No focal consolidation is seen . No pleural effusion or pneumothorax is seen . The lungs are relatively hyperinflated .
    OUTPUT:
    
No focal consolidation to suggest pneumonia . Calcified tortuous aorta . On the lateral view , the ascending aorta appears mildly dilated to 4 cm , although not well assessed on this study .