Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The opacity in the right mid lung and medial right upper lung has significantly improved with associated improved aeration of the right upper lung since ___ after the placement of a chest tube . The chest tube tip remains in the right upper hemithorax , unchanged in position since ___ . Stable small right apical pneumothorax without evidence of tension . Stable large right pleural effusion . The left lung is clear and unchanged from the prior exam . The heart size is normal . Stable mild levoconvex scoliosis of the thoracic spine resulting in associated apparent mild tortuosity of the descending aorta .
    OUTPUT:
    
1 . Significant interval improvement in the right upper lung opacity with improved right upper lung aeration since ___ . 2 . Stable large right pleural effusion since at least ___ . 3 . Stable small right apical pneumothorax since ___ .