Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is normal . Mediastinal contour is unremarkable . Extensively tortuous ectatic thoracic aorta is unchanged from CT torso of ___ . No focal consolidation , pleural effusion or pneumothorax is noted . Mild scarring atelectasis is noted at the left lung base . There is a small hiatal hernia .
    OUTPUT:
    
No evidence of pneumothorax . Small hiatal hernia .