Section of Rheumatology, Children's Mercy Hospitals and Clinics, Kansas City, Missouri 64108, and Oregon Health and Science University, Portland, USA. mlbecker@cmh.edu
This is the first report of a CARD15 mutation-positive patient with Blau syndrome who exhibited interstitial lung disease, a feature historically considered absent from Blau syndrome, while typical of the adult form of sarcoidosis. This case illustrates the continued evolution of the phenotype of a disease initially conceived as a familial inflammatory granulomatous disease limited to the triad of synovitis, dermatitis, and uveitis.