Reversible distension of the subarachnoid space around the optic nerves in a case of idiopathic hypertrophic pachymeningitis.
Idiopathic hypertrophic pachymeningitis (IHP) is a chronic inflammatory disease of unknown cause. We report a case of IHP with bilateral distended subarachnoid space (SAS) of the optic nerves and unilateral visual disturbance. We observed marked amelioration of magnetic resonance (MR) imaging findings after initiation of treatment with prednisolone. This radiological finding implicates optic nerve sheath involvement that affects cerebrospinal fluid (CSF) dynamics around the optic nerve.
Department of Neurology, Hematology, Metabolism, Endocrinology, and Diabetology, Yamagata University Faculty of Medicine, Yamagata, Japan.
Toshitada
T
Hiraka
Shingo
S
Koyama
Katsuro
K
Kurokawa
Haruko
H
Tanji
Chifumi
C
Iseki
Manabu
M
Wada
Toru
T
Kawanami
Atsuko
A
Oda
Takaaki
T
Hosoya
Takeo
T
Kato
D001100:Arachnoiditis / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009901:Optic Nerve Diseases / Q000473:pathology*; D009902:Optic Neuritis / Q000473:pathology*; D013346:Subarachnoid Space / Q000473:pathology*