A case of neurosarcoidosis without systemic involvement

Sarcoidosis is a multisystem disorder of unknown cause. The involvement of the nervous system occurs 5% to 27% of patients with sarcoidosis, and neurosarcoidosis without systemic involvement is rare and difficult to diagnose. We present a case of 58-year-old woman with clinical features of multiple cranial and peripheral polyneuropathy with noncaseating granulomatous inflammation. Extensive testing for occult systemic sarcoidosis was negative. Sural nerve biopsy showed several perineural noncaseous granulomatous inflammation with prominent epithelioid cells. Oral steroid therapy led to some improvement. We report a patient with multiple cranial and peripheral polyneuropathy without systemic involvement, suspected sarcoidosis.