Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes . There is a right chest tube , which terminates at the right base . There is no evidence of pneumothorax . Heart size is stable . The mediastinal and hilar contours are stable . The pulmonary vasculature is normal . Lungs are clear . No pleural effusion is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Chest tube in appropriate positioning without any evidence of pneumothorax .