title: Prevalence of oral squamous cell carcinoma of tongue in and around Davangere, Karnataka, India: A retrospective study over 13 years.
abstract: OBJECTIVE
  The aim was to determine the frequency and distribution of oral squamous cell carcinoma (OSCC) involving tongue among patients by studying biopsy specimens obtained from the archives of the Department of Oral and Maxillofacial Pathology, College of Dental Sciences, Davangere, Karnataka, India, during the past 13 years.
  
  
  METHODS
  Data for the study were retrieved from the case records of patients. Analyzed clinical variables included age, sex, anatomical site, and histological diagnosis.
  
  
  RESULTS
  Of the 369 squamous cell carcinoma involving head and neck region, we found 52 biopsies reported exclusively involving tongue. Lateral border of the tongue was most commonly involved (43 cases, 82.7%), followed by base of tongue and posterior part of tongue. The patient were affected over a wide range of 27-80 years with mean age of 55.75 years and peak incidence was seen in the fourth and fifth decades of life, with the male: female ratio of 1.7:1.
  
  
  CONCLUSIONS
  The prevalence rate of OSCC involving tongue showed a definite geographic variation when compared with a study done in other parts of the world.
authors.affiliation: Department of Oral and Maxillofacial Pathology and Microbiology, Mahe Institute of Dental Science and Hospital, Mahe, Puducherry, India.
authors.forename: M
authors.initials: M
authors.lastname: Selvamani
authors.affiliation: Department of Oral Pathology, Vivekanandha Dental College for Women, Tiruchengode, Namakkal, Tamil Nadu, India.
authors.forename: Andamuthu
authors.initials: A
authors.lastname: Yamunadevi
authors.affiliation: Department of Oral and Maxillofacial Pathology and Microbiology, College of Dental Sciences and Hospital, Davangere, Karnataka, India.
authors.forename: Praveen S
authors.initials: PS
authors.lastname: Basandi
authors.affiliation: Department of Oral and Maxillofacial Pathology and Microbiology, College of Dental Sciences and Hospital, Davangere, Karnataka, India.
authors.forename: G S
authors.initials: GS
authors.lastname: Madhushankari
keywords: Lateral border of tongue; oral squamous cell carcinoma; tongue carcinoma