Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aorta is tortuous . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Subtle opacity over the right heart border is similar appearing to ___ and may represent a focal infection . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Right middle lobe opacity concerning for possible pneumonia . Recommend followup chest radiograph in ___ weeks for further evaluation .