Cystic fibrosis is a disorder, usually inherited,  that causes severe damage to the lungs and digestive system. It affects the cells that normally produce mucus, sweat, and digestive juices and causes these fluids to thicken up and block tubes, ducts and passageways.

This disorder is progressive, meaning it has multiple stages before it reaches end-stage cystic fibrosis. Elaine Kurie illustrated the 4 stages in comparison to the appearance of normal airways.

See more of Elaine’s work through her Medical Illustration Sourcebook portfolio and her site: