[Isolation of Geosmithia argillacea in a cystic fibrosis patient].

We report the case of an 11-year-old child with cystic fibrosis where Geosmithia argillacea has been isolated from sputum. This is a filamentous fungus (mold) recently described as emergent infectious agent in cystic fibrosis patients. In our case, the presence of G. argillacea was not associated with clinical disorder. However, recent evidence shows that it can be responsible for very serious invasive infection, especially in chronic granulomatous disease and may be, after lung transplantation.