Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . There is a persistent , subtle opacity in the right middle lobe , however this is improved from the prior examination . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Persistent opacity in the right middle lobe , improved from the prior examination consistent with resolving pneumonia