title: Fluctuating hemiparesis caused by a quadrigeminal arachnoid cyst: case report.
abstract: A 42-year-old woman presented with intermittent hemiparesis mimicking a reversible ischemic neurologic deficit. Magnetic resonance imaging (MRI) demonstrated a compression of the left side of the midbrain by a quadrigeminal arachnoid cyst without hydrocephalus. After the cystic wall was widely excised under operating microscope, the patient made a good recovery and remained well at a follow-up of 18 months. The absence of hydrocephalus in a symptomatic patient with a quadrigeminal cyst was exceptional, which might result from the early diagnosis with MRI. The use of microsurgical technique made it possible to excise the cystic wall widely and omit a shunting procedure.
authors.affiliation: Division of Neurosurgery, Department of Neurology, Chang Gung Memoral Hospital, Taipei, Taiwan, R.O.C.
authors.forename: C W
authors.initials: CW
authors.lastname: Wong
authors.forename: S T
authors.initials: ST
authors.lastname: Lee
authors.forename: T N
authors.initials: TN
authors.lastname: Lui
authors.forename: T
authors.initials: T
authors.lastname: Wu
authors.forename: L L
authors.initials: LL
authors.lastname: WU
mesh_terms: D000328:Adult; D016080:Arachnoid Cysts / Q000150:complications* / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006429:Hemiplegia / Q000209:etiology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D014057:Tomography, X-Ray Computed