Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is increased opacity in the right lung base with obscuration of the right heart border , findings consistent with a right middle lobe pneumonia . The remainder of the lungs appear clear . Chain suture material is identified in the left mid lung and was seen on prior CT . There is no pulmonary edema or large pleural effusions . Cardiomediastinal and hilar contours are within normal limits and unchanged from prior . No pneumothorax is evident .
    OUTPUT:
    
Right middle lobe pneumonia .