title: Huge arachnoid cyst in the posterior fossa: controversial discussion for selection of the surgical approach.
abstract: METHODS
  We report a case of a huge posterior fossa arachnoid cyst with hydrocephalus. This 15-month-old girl presented with macrocrania and psychomotor retardation. Magnetic resonance (MR) imaging demonstrated ventriculomegaly and a huge cystic lesion in the posterior fossa. A membranectomy was performed microscopically and the patient had a good postoperative course.
  
  
  RESULTS
  Magnetic resonance imaging 1 year after the operation revealed adequate reduction in the size of the ventricle and cyst. Progressive macrocrania discontinued and normal development was obtained.
authors.affiliation: Department of Neurosurgery, Toyama Medical and Pharmaceutical University, 2630 Sugitani, Toyama 930-0194, Japan.
authors.forename: Yoshifumi
authors.initials: Y
authors.lastname: Tsuboi
authors.forename: Hideo
authors.initials: H
authors.lastname: Hamada
authors.forename: Nakamasa
authors.initials: N
authors.lastname: Hayashi
authors.forename: Masanori
authors.initials: M
authors.lastname: Kurimoto
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Hirashima
authors.forename: Shunro
authors.initials: S
authors.lastname: Endo
mesh_terms: D016080:Arachnoid Cysts / Q000150:complications / Q000473:pathology / Q000601:surgery*; D003388:Cranial Fossa, Posterior / Q000473:pathology / Q000601:surgery*; D005260:Female; D006801:Humans; D006849:Hydrocephalus / Q000150:complications / Q000473:pathology / Q000601:surgery*; D007223:Infant; D008279:Magnetic Resonance Imaging / Q000379:methods; D008866:Microsurgery / Q000379:methods*; D014057:Tomography, X-Ray Computed