Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are persistent bilateral patchy opacities . There appears to be improved aeration in the upper lung zones bilaterally , however opacities are dense in the mid lungs , right worse than left . Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Improving multifocal pneumonia with persistent opacification of the mid lung in the upper and lower lobes , right worse than left .