The pleura is a thin membrane that surrounds the lungs. The space between the pleura and the lungs is usually very thin. Pneumothorax is the collection of air or gas in this space around the lungs, which leads to a lung collapse.
Review Date 9/29/2019
Updated by: Kimberly G. Lee, MD, MSc, IBCLC, Clinical Professor of Pediatrics, Division of Neonatology, Medical University of South Carolina, Charleston, SC. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.