
Cystic fibrosis causes mucus to become thick and sticky, which can block the normal function of the organs. Most often, the lungs and pancreas are affected.
| By | Healthwise Staff |
| Primary Medical Reviewer | John Pope, MD - Pediatrics |
| Specialist Medical Reviewer | Susanna McColley, MD - Pediatric Pulmonology |
| Last Revised | June 15, 2011 |