title: [Clinical and pathological analysis of jaw ameloblastomas in 890 patients].
abstract: OBJECTIVE
  To investigate the clinical and pathological features of jaw ameloblastomas in 890 patients, in order to provide reference for clinical diagnosis and treatment.
  
  
  METHODS
  Eight hundred and ninty cases with jaw ameloblastomas treated in our department from January 2003 to June 2014 were retrospectively analyzed, including their gender, age, primary sites, pathological subtypes and therapies.
  
  
  RESULTS
  The age of patients ranged from 6 to 101 years old, with a mean age of 40.15 years. The distribution between males and females were 61.91% (551/890) males to 38.08% (339/890) females (1.62:1). 724 (81.35%) were located in the mandible, 166 (18.65%) were located in the maxilla. The occurrence of jaw ameloblastomas in this series of 890 patients was same in both sides of the jaw. Jaw ameloblastomas occurred in any parts of the jaw. Solid (378/890) and unicystic ameloblastoma (427/890) were the most common pathological subtypes. 414 cases underwent curettage, 212 cases underwent decompression, and 264 cases underwent mandibulectomy or maxillectomy.
  
  
  CONCLUSIONS
  Jaw ameloblastoma mainly happens in mandible and young people. Men are more vulnerable to suffer from than women. The most common sites are mandibular molar region and ramus. Curettage is the most commonly used treatment for ameloblastomas. Supported by Scientific Research Fund of Oromaxillofacial Head and Neck Surgery of Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine.
authors.affiliation: Department of Oromaxillofacial Head and Neck Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; Shanghai Key Laboratory of Stomatology. Shanghai 200011, China.E-mail:cycstal2002@126.com.
authors.forename: Liu
authors.initials: L
authors.lastname: Liu
authors.forename: Xin-yu
authors.initials: XY
authors.lastname: Zhang
authors.forename: Yong-jie
authors.initials: YJ
authors.lastname: Hu
authors.forename: Chen-ping
authors.initials: CP
authors.lastname: Zhang
authors.forename: Zhi-yuan
authors.initials: ZY
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000564:Ameloblastoma; D002648:Child; D003475:Curettage; D019299:Decompression, Surgical; D005260:Female; D006801:Humans; D007573:Jaw Neoplasms; D008297:Male; D008334:Mandible; D008437:Maxilla; D008875:Middle Aged; D008963:Molar; D012189:Retrospective Studies; D055815:Young Adult