Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no evidence of pneumothorax or pneumomediastinum . Cardiomediastinal contours are within normal limits . Multifocal lung opacities have substantially improved with residual faint ground - glass opacities remaining , affecting the right lung to a greater degree than the left . Some of these have a round or nodular configuration as demonstrated on prior CT . Known mediastinal lymphadenopathy in the subcarinal region is evidenced by fullness in the infrahilar region on the lateral view .
    OUTPUT:
    
1 . No evidence of pneumothorax . 2 . Markedly improving multifocal lung opacities . Although nonspecific , if the patient received recent antibiotic therapy , this may reflect a resolving infection .