Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Significant interval decrease in the cavitary opacity in the right lower lobe with minimal residual linear opacity . The lungs are otherwise clear . No pleural effusions or pneumothorax . The cardiomediastinal contours are unremarkable .
    OUTPUT:
    
Significant interval decrease of the right lung abscess , with minimal residual linear opacity likely scar .