Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A hazy opacity is seen in the right lower lung on AP view . The upper lungs are clear . Hyperinflated lungs and upper lung vascular deficiency suggests emphysema . The pulmonary artery is mildly enlarged . The heart size is unchanged . No pulmonary edema , pneumothorax , or pleural effusion .
    OUTPUT:
    
Hazy opacity seen in the right lower lung on AP view is concerning for pneumonia .