Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Stable enlargement of the cardiac silhouette . The aorta is calcified and tortuous . The hilar contours are normal . The pulmonary vasculature is normal . Lungs are clear . There is a small left pleural effusion . No pneumothorax is seen . Again noted is a moderate - sized hiatal hernia , which obliterates the azygo -esophageal recess .
    OUTPUT:
    
1 . Small left pleural effusion with stable cardiomegaly , but no other evidence of congestive heart failure . 2 . Moderate - sized hiatal hernia .