"pneumothorax." YourDictionary, n.d. Web. 17 December 2018. <https://www.yourdictionary.com/pneumothorax>.
pneumothorax. (n.d.). Retrieved December 17th, 2018, from https://www.yourdictionary.com/pneumothorax
Accumulation of a gas, such as air, in the space between the pleurae of the lungs and the pleurae lining the chest wall (called the pleural cavity),
occurring as a result of disease or injury or induced to collapse the lung in the treatment of tuberculosis and other lung diseases. A large pneumothorax is treated by inserting a syringe or a tube into the pleural cavity to aspirate air, which helps the collapsed lung to expand.