title: Long-term outcomes of facial nerve schwannomas with favorable facial nerve function: tumor growth rate is correlated with initial tumor size.
abstract: OBJECTIVE
  The study aimed to report long-term outcomes of facial nerve schwannomas (FNS) with favorable facial nerve function by observation, and to discuss about the relationship between initial tumor size and tumor growth.
  
  
  METHODS
  21 facial nerve schwannoma cases with favorable facial nerve function were managed by observation. They were divided into larger size group (size ≥10mm) and smaller size group (size <10mm) according to initial tumor size.
  
  
  RESULTS
  They were followed up for 6.4±1.7years. 18 of 21 cases (85.7%) maintained House-Brackmann Grade III or better. Growth rate of the tumors in larger size group was 72.7%, much higher than 10% in smaller size group (p<0.05).
  
  
  CONCLUSIONS
  Observation was feasible for most FNS with favorable facial nerve function, and growth rate of the tumors was associated with tumor size.
authors.affiliation: Department of Neurosurgery, Third Affiliated Hospital of Xinxiang Medical College, Xinxiang City 453003, Henan Province, PR China.
authors.forename: Weilong
authors.initials: W
authors.lastname: Yang
authors.affiliation: Department of Neurosurgery, Third Affiliated Hospital of Xinxiang Medical College, Xinxiang City 453003, Henan Province, PR China. Electronic address: zhaojp4203@163.com.
authors.forename: Jiapeng
authors.initials: J
authors.lastname: Zhao
authors.affiliation: Department of Neurosurgery, Third Affiliated Hospital of Xinxiang Medical College, Xinxiang City 453003, Henan Province, PR China.
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Han
authors.affiliation: Department of Oncology, Third Affiliated Hospital of Xinxiang Medical College, Xinxiang City 453003, Henan Province, PR China.
authors.forename: Huilin
authors.initials: H
authors.lastname: Yang
authors.affiliation: Department of Neurosurgery, Third Affiliated Hospital of Xinxiang Medical College, Xinxiang City 453003, Henan Province, PR China.
authors.forename: Junling
authors.initials: J
authors.lastname: Xing
authors.affiliation: Department of Neurosurgery, Third Affiliated Hospital of Xinxiang Medical College, Xinxiang City 453003, Henan Province, PR China.
authors.forename: Yongsen
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Department of Neurosurgery, Third Affiliated Hospital of Xinxiang Medical College, Xinxiang City 453003, Henan Province, PR China.
authors.forename: Yufeng
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Department of Neurosurgery, Third Affiliated Hospital of Xinxiang Medical College, Xinxiang City 453003, Henan Province, PR China.
authors.forename: Hui
authors.initials: H
authors.lastname: Liu
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D002681:China; D015331:Cohort Studies; D003390:Cranial Nerve Neoplasms / Q000473:pathology* / Q000601:surgery / Q000628:therapy*; D018450:Disease Progression; D005154:Facial Nerve / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness / Q000473:pathology; D009367:Neoplasm Staging; D009442:Neurilemmoma / Q000473:pathology* / Q000601:surgery / Q000628:therapy*; D011379:Prognosis; D012189:Retrospective Studies; D018570:Risk Assessment; D012737:Sex Factors; D013997:Time Factors; D047368:Tumor Burden; D057832:Watchful Waiting / Q000379:methods*; D055815:Young Adult