Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the cardiac silhouette is present . The aorta is mildly tortuous . The pulmonary vascularity is not engorged , and the hilar contours are unremarkable . Lungs are clear . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .