title: Incidence and prevalence of salivary gland tumours in Valparaiso, Chile.
abstract: BACKGROUND
  To determine the incidence and prevalence of salivary gland tumours in the province of Valparaíso, Chile.
  
  
  METHODS
  Retrospective review of salivary gland tumours diagnosed between the years 2000 and 2011 from four local pathology services. Information on demographics and histopathology were retrieved from the medical records.
  
  
  RESULTS
  The study sample consisted of 279 salivary gland tumours. Prevalence and incidence rates per 100.000 persons were 15.4 and 2.51, respectively. Most of the neoplasms corresponded to benign tumours (70.3%). The most affected gland was the parotid gland. Pleomorphic adenoma was the most common benign tumour (53.8%) and mucoepidermoid carcinoma was the most common malignant tumour (7.2%).
  
  
  CONCLUSIONS
  Salivary gland tumours are uncommon neoplasms that usually arise in the parotid gland. Pleomorphic adenoma and mucoepidermoid carcinoma were the most common benign and malignant tumours reported in this series.
authors.affiliation: Avenida Valparaiso 1560, Viña del Mar, Chile, aesguep@unab.cl.
authors.forename: Juan
authors.initials: J
authors.lastname: Araya
authors.forename: René
authors.initials: R
authors.lastname: Martinez
authors.forename: Sven
authors.initials: S
authors.lastname: Niklander
authors.forename: Maureen
authors.initials: M
authors.lastname: Marshall
authors.forename: Alfredo
authors.initials: A
authors.lastname: Esguep
mesh_terms: D002677:Chile / Q000453:epidemiology; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012189:Retrospective Studies; D012468:Salivary Gland Neoplasms / Q000453:epidemiology*