Trigeminal ganglion involvement in sarcoidosis

Sarcoidosis is a disease of unknown etiology presenting as noncaseating granulomatous infiltration in tissues. Central Nervous system is rarely affected , usually as dissemination from other organs, mainly lungs. We report on a case in which the patient had only central nervous system involvement, presenting with a mass in the right gasserian ganglion and another lesion in right parietal cortex, observed in magnetic resonance. Diagnosis was given by histopathological study of the lesion and the patient improved with corticosteroid treatment.