title: Ectodermal odontogenic tumours: analysis of 197 Nigerian cases.
abstract: This article presents a clinico-pathologic analysis of 197 cases of ectodermal odontogenic tumours archived in the Lagos University Teaching Hospital, Lagos Nigeria over a 21-year period. They were categorized according to the WHO classification of odontogenic tumours. Of the 197 cases, 182 (92.3%) were benign while 15 (7.6%) were malignant. Central ameloblastoma, which accounted for 88.3% in this series, was the most common benign neoplasm demonstrating predilection for males (58.6%) and the mandible (83.3%). The mean age of occurrence (+/-SD) was 31.00 +/- 13.9 (range 9-82 years). Similarly ameloblastic carcinoma was the most prevalent malignant tumour (5.6%) with a predilection for females (63.6%) and the mandible (81.8%). The mean age of occurrence (+/-SD) was 30.1+/- 20.7 (range 16-85) years. Follicular ameloblastoma was found to be the commonest histologic subtype seen in Nigeria.
authors.affiliation: Department of Oral Biology and Pathology, School of Dental Sciences, College of Medicine, University of Lagos, Lagos, Nigeria. kenad@justice.com
authors.forename: K E
authors.initials: KE
authors.lastname: Adebiyi
authors.forename: O
authors.initials: O
authors.lastname: Odukoya
authors.forename: E O
authors.initials: EO
authors.lastname: Taiwo
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000564:Ameloblastoma / Q000145:classification / Q000453:epidemiology; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008339:Mandibular Neoplasms / Q000453:epidemiology; D008875:Middle Aged; D009549:Nigeria / Q000453:epidemiology; D009808:Odontogenic Tumors / Q000145:classification / Q000453:epidemiology*; D012737:Sex Factors