Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged . An opacity in the medial right lower lung has essentially resolved , using the earlier radiographs as a baseline reference . The lateral view best depicts minimal residual opacification in the right middle lobe but nearly resolved . Mild hyperinflation is present . There is no pleural effusion or pneumothorax . Mild degenerative changes are similar along the thoracic spine .
    OUTPUT:
    
Nearly resolved right middle lobe opacity . No evidence for superimposed acute process .