Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The hilar contours are normal . Aorta is tortuous or dilated . The pulmonary vasculature is normal . Scarring or atelectasis is seen in the right middle lobe . No focal consolidation , pleural effusion or pneumothorax . Healed left rib fractures are again seen .
    OUTPUT:
    
No pneumonia or acute infiltrates .