Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . Lung volumes are low . There is opacification of the right middle lobe , likely residual opacity that has improved since the prior radiographs . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Overall improvement in the medial right basilar opacity with residual right middle lobe opacification .