Atelectasis is when the airways or air sacs in the lungs collapse or do not fully expand. Symptoms can include shallow breathing, coughing, and wheezing. Treatment may involve medications, breathing ...

Atelectasis (pronounced a-teh-LEK-tuh-sis) is a lung condition that happens when your airways or the tiny sacs at the end of them don’t expand the way they should when you breathe. Because of this, a ...