Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright view of the chest demonstrates small apical right pneumothorax , which is unchanged since prior . Right - sided chest tube is unchanged in position . Right pleural effusion is also stable in size . Right Upper lung opacity is unchanged . Left lung is essentially clear without pleural effusion or pneumothorax .
    OUTPUT:
    
In comparison to study obtained seven hours prior , there is no significant interval change in small right apical pneumothorax .