Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Following right chest tube placement , moderate right pleural effusion and right lower lobe volume loss have improved . Mild left pleural effusion with adjacent atelectasis is unchanged . No new lung opacities of concern . Top normal heart size and mediastinal and hilar contours are stable . Mild indentation along the left lower tracheal air column , approximately at the level of the clavicles , corresponds to goitrous left lobe of thyroid indenting on trachea on CT torso dated ___ .
    OUTPUT:
    
Following right chest drain tube placement , moderate right pleural effusion and right lower lobe volume loss have resolved , minimal left pleural effusion and left lower lung atelectasis is unchanged .