Disorders include blood (hemothorax) or air (pneumothorax, which can lead to atelectasis) in the pleural cavity, and inflammation of the pleura (pleurisy).

• 其病变有胸膜腔中血液（血胸）或气体（气胸，可导致肺不张）方面的疾病，和胸膜的炎症（胸膜炎）。