[Di George syndrome: not always a pediatric diagnosis].

We describe a delayed diagnosis of Di George syndrome, in a 51 yr-old woman, with past medical history of epilepsy, mental retardation, chronic psychosis, nephrocalcinosis. She presented facial dysmorphism, multiple encephalic calcifications, hypocalcemia and lymphopenia. A microdeletion of 22q 11.2 was detected by fluorescence in situ hybridization (FISH), confirming the clinical suspicion .