Neurosarcoidosis: cerebrospinal fluid lymphocyte subpopulations

CSF lymphocyte subpopulations of eight patients with neurosarcoidosis were examined. CSF or CT was abnormal in all. The CSF T4/T8 (helper/suppressor) ratio was elevated at 6.8 and 7.6 in two patients; in one, there were only CSF T4 cells. The ratio was normal in five patients.