<prompt> Which of the following statements about pneumothorax is true:Breath sounds are increasedPercussion note is decreasedAlways needs chest tube inseionOften needs chest tube inseion  <response>: Answer is D Often need chest tube inseion: Pneumothorax is associated with decreased breath sounds, hyperresonant increased percussion note. Chest tube drainage is often required but is not necessary in all cases. Many small pneumothoraces resolve spontaneously as air is reabsorbed from the pleural space. In reliable patients with small stable pneumothorax observation alone may be appropriate 