title: Tumors of the salivary gland in Mexicans.  A retrospective study of 360 cases.
abstract: OBJECTIVE
  To establish distribution frequency and demographic characteristics of salivary gland tumours (SGT) in order to identify possible risk profiles.
  
  
  METHODS
  The present report constitutes an eight year retrospective study (January 2000-August 2007). The archives of the Clinical and Experimental Pathology Laboratory (Graduate and Research Division, Dental School, National Autonomous University of Mexico) as well as archives of the Surgical Pathology Service (General Hospital, Mexico City) were subject to revision in order to select all cases where SGT tumour diagnoses were emitted. Age and gender of patients as well as SGT topography were obtained from medical records. Selected cases were classified according to location of the lesion, histological lineage and biological behaviour.
  
  
  RESULTS
  360 cases of SGT were included, 227 (67%) cases were benign tumours, while 83 cases (23%) were malignant tumours. SGT were most frequent in women with ages ranging from their 3rd to 5th decades of life. 275 tumours were located in major salivary glands, 78.9% of them were identified in the parotid gland. The most frequent location of tumours arising from minor salivary glands (33 cases, 38%) was found in the palatine glands. Tumours of epithelial lineage were the predominant histological type. The most frequent benign tumours were pleomorphic adenomas (86.1%) and papillary cystadenoma lymphomatosum (7.3%). The most frequent malignant tumours were adenoid cystic carcinomas (25%) and mucoepidermoid carcinomas (23.6%).
  
  
  CONCLUSIONS
  Salivary gland tumours in Mexican population appear principally in major salivary glands of women in their 3rd to 5th decade of life.
authors.affiliation: Laboratorio de Patología Clínica y Experimental, División de Estudios de Postgrado e Investigación, Facultad de Odontología, Universidad Nacional Autónoma de México, Circuito Institutos s/n, Ciudad Universitaria, Coyoacán 04510, D.F. México. patoidf@yahoo.com.mx
authors.forename: C-P
authors.initials: CP
authors.lastname: Mejía-Velázquez
authors.forename: M-A
authors.initials: MA
authors.lastname: Durán-Padilla
authors.forename: E
authors.initials: E
authors.lastname: Gómez-Apo
authors.forename: D
authors.initials: D
authors.lastname: Quezada-Rivera
authors.forename: L-A
authors.initials: LA
authors.lastname: Gaitán-Cepeda
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008800:Mexico / Q000453:epidemiology; D008875:Middle Aged; D012189:Retrospective Studies; D012307:Risk Factors; D012468:Salivary Gland Neoplasms / Q000453:epidemiology*; D055815:Young Adult