319. EFFICACY OF RITUXIMAB THERAPY AGAINST ANTI-NEUTROPHIL CYTOPLASMIC ANTIBODY-RELATED HYPERTROPHIC PACHYMENINGITIS: A CASE SERIES. (29th March 2019) - Kobayasahi, Yoshiaki; Kobayashi, Kei; Nakagomi, Daiki; Hanai, Shunichiro; Yamagata, Mieko; Sugiyama, Takao; Kawashima, Hirotoshi; Furuta, Shunsuke; Nakajima, Hiroshi; Kitamura, Kenichiro