title: Odontogenic tumours: a retrospective study of 1642 cases in a Chinese population.
abstract: A total of 1642 odontogenic tumour cases retrieved from the files of the College of Stomatology, Sichuan University, China were retrospectively analyzed for gender, age, tumour site and relative frequency of various types, and the data compared with that of previous reports. The final diagnosis in each case was based on the WHO 2005 histopathological classification of odontogenic tumours. Of these tumours 1592 (97.0%) were benign and 50 (3.0%) were malignant. Ameloblastoma (40.3%) was the most frequent type, followed by keratocystic odontogenic tumour (35.8%), odontoma (4.7%) and odontogenic myxoma (4.6%). The mean age of the patients was 32.1, with a wide range (3-84 years). The male-female ratio and maxilla-mandible ratio were 1.4:1 and 1:4.0, respectively. Ameloblastoma and keratocystic odontogenic tumours, important indications of extensive surgical procedures, are not considered rare in this Chinese population, whereas odontoma is uncommon.
authors.affiliation: No. 14, 3rd sec, Ren Min Nan Road, Department of Oral and Maxillofacial Surgery, West China College of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, PR China.
authors.forename: W
authors.initials: W
authors.lastname: Jing
authors.forename: M
authors.initials: M
authors.lastname: Xuan
authors.forename: Y
authors.initials: Y
authors.lastname: Lin
authors.forename: L
authors.initials: L
authors.lastname: Wu
authors.forename: L
authors.initials: L
authors.lastname: Liu
authors.forename: X
authors.initials: X
authors.lastname: Zheng
authors.forename: W
authors.initials: W
authors.lastname: Tang
authors.forename: J
authors.initials: J
authors.lastname: Qiao
authors.forename: W
authors.initials: W
authors.lastname: Tian
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D000564:Ameloblastoma / Q000453:epidemiology / Q000473:pathology; D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008339:Mandibular Neoplasms / Q000145:classification / Q000453:epidemiology* / Q000473:pathology; D008441:Maxillary Neoplasms / Q000145:classification / Q000453:epidemiology* / Q000473:pathology; D008875:Middle Aged; D009808:Odontogenic Tumors / Q000145:classification / Q000453:epidemiology* / Q000473:pathology; D012189:Retrospective Studies; D012744:Sex Ratio