title: ANCA-negative granulomatosis with polyangiitis presenting with orbital apex syndrome and recurrent pachymeningitis: A case report.
authors.affiliation: Department of Neurology, School of Medicine, Sapporo Medical University, South 1, West 17, Chuo-ku, Sapporo 060-8543, Japan. Electronic address: hisahara@sapmed.ac.jp.
authors.forename: Shin
authors.initials: S
authors.lastname: Hisahara
authors.affiliation: Department of Neurology, School of Medicine, Sapporo Medical University, South 1, West 17, Chuo-ku, Sapporo 060-8543, Japan. Electronic address: darumanomiya@yahoo.co.jp.
authors.forename: Minoru
authors.initials: M
authors.lastname: Yamada
authors.affiliation: Department of Neurology, School of Medicine, Sapporo Medical University, South 1, West 17, Chuo-ku, Sapporo 060-8543, Japan. Electronic address: happa64@titan.ocn.ne.jp.
authors.forename: Yousuke
authors.initials: Y
authors.lastname: Matsuura
authors.affiliation: Department of Neurology, School of Medicine, Sapporo Medical University, South 1, West 17, Chuo-ku, Sapporo 060-8543, Japan. Electronic address: tsudaemi@sapmed.ac.jp.
authors.forename: Emiko
authors.initials: E
authors.lastname: Tsuda
authors.affiliation: Department of Neurosurgery, School of Medicine, Sapporo Medical University, South 1, West 17, Chuo-ku, Sapporo 060-8543, Japan. Electronic address: akiyuki@sapmed.ac.jp.
authors.forename: Yukinori
authors.initials: Y
authors.lastname: Akiyama
authors.affiliation: Department of Neurology, School of Medicine, Sapporo Medical University, South 1, West 17, Chuo-ku, Sapporo 060-8543, Japan. Electronic address: msaitoh@sapmed.ac.jp.
authors.forename: Masaki
authors.initials: M
authors.lastname: Saitoh
authors.affiliation: Department of Neurology, School of Medicine, Sapporo Medical University, South 1, West 17, Chuo-ku, Sapporo 060-8543, Japan. Electronic address: jkawamata@sapmed.ac.jp.
authors.forename: Jun
authors.initials: J
authors.lastname: Kawamata
authors.affiliation: Department of Neurosurgery, School of Medicine, Sapporo Medical University, South 1, West 17, Chuo-ku, Sapporo 060-8543, Japan. Electronic address: mikunin@sapmed.ac.jp.
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Mikuni
authors.affiliation: Department of Neurology, School of Medicine, Sapporo Medical University, South 1, West 17, Chuo-ku, Sapporo 060-8543, Japan. Electronic address: shimoha@sapmed.ac.jp.
authors.forename: Shun
authors.initials: S
authors.lastname: Shimohama
mesh_terms: D000368:Aged; D019268:Antibodies, Antineutrophil Cytoplasmic / Q000378:metabolism; D001921:Brain / Q000000981:diagnostic imaging / Q000473:pathology; D003389:Cranial Nerve Diseases / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology / Q000503:physiopathology*; D003937:Diagnosis, Differential; D014890:Granulomatosis with Polyangiitis / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008581:Meningitis / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology / Q000503:physiopathology*
chemical_list: D019268:Antibodies, Antineutrophil Cytoplasmic
keywords: Anti-neutrophil cytoplasm antibodies (ANCA); Granulomatosis with polyangiitis (GPA); Orbital apex syndrome (OAS); Orbital pseudotumor; Pachymeningitis