title: The adenomatoid odontogenic tumor: an analysis of 57 cases in a black African population.
abstract: OBJECTIVE
  This study analyzed the findings in a large series of adenomatoid odontogenic tumors (AOT) in Nigerians.
  
  
  METHODS
  Hospital records of all cases of AOT diagnosed at three teaching hospitals were reviewed and analyzed.
  
  
  RESULTS
  Most of the tumors were intraosseous (central) (98.3%) and of the follicular type (75%). Females were more frequently affected than males (1.4:1), and patients in their second decade of life were most frequently affected (75%). Patients with follicular AOT were relatively younger (15.2 +/- 5.6 years) than those with extrafollicular tumors (20.9 +/- 13.8 years). However, males who presented with extrafollicular tumors (14.6 +/- 3.9 years) were relatively younger than their female counterparts (24.9 +/- 16 years). The maxilla was affected nearly twice as often as the mandible (1.8:1), and the canine tooth was frequently embedded in the tumor (76.9%). Although follicular tumors were most frequently located in the maxilla (76.3%), extrafollicular tumors were more commonly found in the mandible (69.2%).
  
  
  CONCLUSIONS
  The distribution of this tumor in black Africans does not appear to be substantially different from that reported in caucasians.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Lagos University Teaching Hospital, Nigeria.
authors.forename: G T
authors.initials: GT
authors.lastname: Arotiba
authors.forename: J T
authors.initials: JT
authors.lastname: Arotiba
authors.forename: A A
authors.initials: AA
authors.lastname: Olaitan
authors.forename: O F
authors.initials: OF
authors.lastname: Ajayi
mesh_terms: D000293:Adolescent; D000328:Adult; D001741:Black or African American; D000368:Aged; D044383:Black People; D002648:Child; D003481:Cuspid; D005260:Female; D006801:Humans; D007573:Jaw Neoplasms / Q000453:epidemiology* / Q000208:ethnology / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009549:Nigeria / Q000453:epidemiology; D009808:Odontogenic Tumors / Q000453:epidemiology* / Q000208:ethnology / Q000473:pathology; D015995:Prevalence; D012744:Sex Ratio