Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal consolidation is seen . There is no pleural effusion or pneumothorax . Rounded retrocardiac density likely represents a large hiatal hernia . The cardiac silhouette is mildly enlarged . The aorta is calcified and tortuous . No pulmonary edema is seen . There is no evidence of free air beneath the diaphragms . Partially imaged spinal rods are noted . Surgical clips are seen in the upper abdomen .
    OUTPUT:
    
No evidence of free air beneath the diaphragms . Hiatal hernia . Mild cardiomegaly without pulmonary edema .