title: [Diagnosis and treatment of cystic acoustic neuroma].
abstract: OBJECTIVE
  To study the clinical features and treatment of cystic acoustic neuroma.
  
  
  METHODS
  Twenty-two patients with cystic acoustic neuromas were diagnosed by CT and MRI preoperatively, and the tumors were resected by retrosigmoid approach, and verified by pathological studies.
  
  
  RESULTS
  Of the 22 patients, 18 had tumors totally resected (postoperative house Brackman facial nerve grading: grade II in 4 patients, III in 7, IV in 3, V in 2, VI in 2) and 4 had tumors subtotally resected.
  
  
  CONCLUSIONS
  Because of its specific clinical features and poor operative results, cystic acoustic neuroma should be regarded as a specific subtype.
authors.affiliation: Department of Neurosurgery, Qilu Hospital, Shandong University, Ji'nan 250012, China.
authors.forename: Wan-dong
authors.initials: WD
authors.lastname: Su
authors.forename: Xin-gang
authors.initials: XG
authors.lastname: Li
authors.forename: Ran
authors.initials: R
authors.lastname: Liu
authors.forename: Wen-cheng
authors.initials: WC
authors.lastname: Jian
authors.forename: Yu-guang
authors.initials: YG
authors.lastname: Liu
authors.forename: Shu-gan
authors.initials: SG
authors.lastname: Zhu
authors.forename: Sheng-rong
authors.initials: SR
authors.lastname: Du
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003560:Cysts / Q000175:diagnosis / Q000601:surgery*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009464:Neuroma, Acoustic / Q000175:diagnosis / Q000601:surgery*; D014057:Tomography, X-Ray Computed