Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to ___ , there has been clearing of right lung base pneumonia . There is mild residual opacity at the right lung base . There is no pleural effusion or pneumothorax . Cardiomediastinal and hilar silhouettes are normal size .
    OUTPUT:
    
Interval clearing of right lung base pneumonia . Mild residual opacity remains .