Liver involvement in familial granulomatous arthritis (Blau syndrome)

We describe hepatic granulomata in a patient with familial granulomatous synovitis (Blau syndrome). While visceral involvement is a previously unrecognized manifestation of Blau syndrome, its occurrence has been well documented in a similar disease, childhood sarcoidosis. Our findings suggest that the 2 conditions (Blau syndrome and childhood sarcoidosis) are more closely related than thought.