title: Nonodontogenic cysts of the oral and maxillofacial region: demographic profile in a Brazilian population over a 40-year period.
abstract: The aim of the study was to determine the distribution of histologically diagnosed nonodontogenic cysts (nOCs) over a 40-year period in a Brazilian population. Biopsy records from patients with nOC from the files of the Oral Pathology Service during the period of 1970-2009 were evaluated. Among 10,311 oral biopsies, 58 met the criteria of nOCs. The most frequent nOCs were nasopalatine duct cysts (32.8%), followed by epidermoid cysts (20.7%) and oral lymphoepithelial cysts (17.2%). Nasopalatine duct cysts showed predominance among females (68.4%). Epidermoid cysts were most commonly found in the floor of the mouth (36.4%), tongue (27.3%), and buccal mucosa (27.3%). Oral lymphoepithelial cysts exhibited female prevalence (80.0%) and were commonly located in the tongue (44.4%). The frequency of nOCs found in the population studied here is slightly different from those reported in other case series. Nasopalatine duct cysts, epidermoid cysts, and oral lymphoepithelial cysts were the most common nOCs found, accounting for 70.7% of all nOCs.
authors.affiliation: Department of Oral Pathology, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
authors.forename: Cassiano Francisco Weege
authors.initials: CF
authors.lastname: Nonaka
authors.forename: Aguida Cristina Gomes
authors.initials: AC
authors.lastname: Henriques
authors.forename: Felipe Rodrigues
authors.initials: FR
authors.lastname: de Matos
authors.forename: Lélia Batista
authors.initials: LB
authors.lastname: de Souza
authors.forename: Leão Pereira
authors.initials: LP
authors.lastname: Pinto
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D001706:Biopsy; D001938:Brazil / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D005153:Facial Neoplasms / Q000453:epidemiology* / Q000473:pathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008297:Male; D008441:Maxillary Neoplasms / Q000453:epidemiology* / Q000473:pathology; D008875:Middle Aged; D009017:Morbidity / Q000639:trends; D009062:Mouth Neoplasms / Q000453:epidemiology* / Q000473:pathology; D009631:Nonodontogenic Cysts / Q000453:epidemiology* / Q000473:pathology; D012189:Retrospective Studies; D017678:Sex Distribution; D015996:Survival Rate / Q000639:trends; D013997:Time Factors; D055815:Young Adult