[Cystic fibrosis in a 70-year-old woman]. / Cystisk fibrose hos en 70-årig kvinde.

Cystic fibrosis is usually diagnosed in early childhood, and patients rarely live beyond the age of 40. We present a case of a 70-year-old woman, in whom cystic fibrosis was diagnosed with the rare mutation, R117C. Cystic fibrosis should therefore also be considered in older patients.