Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right perihilar opacity is unchanged since yesterday . A right chest tube remains in place . A right apical pneumothorax is small . Right pleural effusion , if any , is small . Left basal atelectasis is mild . A left - sided internal jugular catheter terminates in the upper SVC .
    OUTPUT:
    
Small right apical pneumothorax after right upper lobe mass resection .