What Is Atelectasis Vs Pneumothorax. A pneumothorax happens when a weak area of your lung tears or your lung is injured so that air escapes into your chest. However, although pneumothorax can cause atelectasis, they are different conditions.
Compare differences in diagnosis, treatments, and prevention of atelectasis and pneumothorax. Atelectasis is when one or more lobes (sections) of the lung collapse because of a blockage or pressure inside or outside.