Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to ___ , there is a mild area of focal opacity near the right heart border consistent with resolving right middle lobe pneumonia . The lung volumes are normal . Normal size of the cardiac silhouette . Normal hilar and mediastinal structures . no pulmonary edema . No pleural effusions .
    OUTPUT:
    
Significant improvement of right lower lung opacities since ___ . Resolving right middle lobe pneumonia .