title: Trends in the incidence of Oral and Pharyngeal Cancer (ICD00-14) in Guilan, North of Iran.
abstract: OBJECTIVE
  This study sought to assess the incidence of oral and pharyngeal cancer based on ICD-10 in Guilan, Iran, from 2004 to 2009.
  
  
  METHODS
  This retrospective study assessed data collected from the Iranian cancer registries and publications. The rate, age-standardized incidence, type, and location of lesions according to ICD-10 were evaluated. Annual percent changes (APC) were estimated.
  
  
  RESULTS
  A total of 1533 head and neck cancers were recorded. Of them, 290 cases (185 males and 105 females) were identified with oral and pharyngeal carcinoma (ICD00-14) with a mean age of 58.92 ± 17.94 years. The most common type of cancer was oral squamous cell carcinoma (n = 156). Cancer of the oropharynx (ICD 06) and lips (ICD00) had high incidence. APC was 1.36%. ASR was 3.5 and 2.04 per 100 000 among males and females, respectively. The mean crude rate was 3.69 per 1 000 000.
  
  
  CONCLUSIONS
  In contrast to the global cancer statistics (ICD 00-14), Guilan showed lower incidence of oral and pharyngeal cancer during the understudy years. Oral squamous cell carcinoma was the most common type of cancer in this region.
authors.affiliation: Dental School, Guilan University of Medical Sciences, Rasht, Iran.
authors.forename: Maryam
authors.initials: M
authors.lastname: Rabiei
authors.affiliation: Dental School, Guilan University of Medical Sciences, Rasht, Iran.
authors.forename: Maryam
authors.initials: M
authors.lastname: Basirat
authors.affiliation: Guilan University of Medical Sciences, Rasht, Iran.
authors.forename: Seyed Mahmood
authors.initials: SM
authors.lastname: Rezvani
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002294:Carcinoma, Squamous Cell / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D005260:Female; D006258:Head and Neck Neoplasms / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D007223:Infant; D007492:Iran / Q000453:epidemiology; D008019:Life Style; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000453:epidemiology*; D010610:Pharyngeal Neoplasms / Q000453:epidemiology*; D012189:Retrospective Studies; D000077195:Squamous Cell Carcinoma of Head and Neck; D055815:Young Adult
keywords: age standard rate; incidence; life style; oral cancer