spontaneous pneumothorax

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun pathology A pulmonary condition resulting in the collection of air within the chest, which occurs absent traumatic injury. Spontaneous Pneumothorax are considered a medical emergency, generally requiring assistive radiographic evaluation to determine the extent of lung collapse, as well as determine the most appropriate course of emergency medical treatment for the patient. Abbreviated as SP.