Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the ___ radiographs there is been marked interval improvement in a right mid to lower lung opacity with only minimal residual opacity . The left lung is clear . No pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Minimal residual opacity over the right mid to lower lung .