Prevalence of oral and pharyngeal cancers in Kermanshah province, Iran: A ten-year period

Abstract

Background: Oral and pharyngeal cancer (OPC) is an entity constituted by a group of tumors that increase in several heterogeneous anatomical sites and therefore, it is difficult to establish comparisons. Objective: The aim of this study is to evaluate the incidence of OPCs based on ICD-10 in Kermanshah, Iran in a 10 year period. Materials and Methods: Of 14421 cancer patients during 2004-2013 in Kermanshah province, 327 (2.15%) cases had OPCs. Eight cases didnʼt have enough information and were censored from the study. Therefore, 319 patients were entered into this study. The registered cancers were coded using ICD-10. The OPCs were defined by C00 to C14. Results: A total of 319 patients [208 males (65.2%) and 111 females (34.8%)] with OPCs were reported during the 10 year period. The incidence for all patients was at a peak of 41 cases in 2007. In total, 75.2, 17.2 and 7.2% of sites of tumor were in the oral cavity, pharynx and salivary glands, respectively. Squamous cell carcinoma and adenoid cystic carcinoma had the most prevalence in both sexes. Lip (54.8% male and 40.5% female) and tongue (11.1% male and 13.5% female) had the most prevalence in both sexes. Conclusion: The prevalence of OPCs in a lot of studies was more in men and they were more in elderly patients. Based on studies, the oral cavity is the most common site of OPCs and also lip is the most common anatomical site for OPCs in more regions of the world, except for European countries.