The incidence of Head and neck cancers in Rafsanjan Aliebne Abitaleb Hospital pathology lab over the period 2005-2016

Background: Head and neck cancer is the sixth most common cancer in the world, and 690,000 new cases are identified, in 2012. Head and neck cancers have a distinct geographical distribution that this difference may be due to different risk habits of the population. Arguments about increase or decrease the incidence of head and neckcancers in different locations is present, for answer to these arguments we need a careful statistical analysis on the incidence of head and neck cancers in our society and compare it with other areas. In this study we determine the incidence of head and neck cancer in patients refer to our lab and compare the incidence in different years.Materials and Methods: The data set consisted of patient information of head and neck cancer that were registered to the Aliebne Abitaleb hospital pathology lab, Rafsanjan, Iran. The existing data extracted from 27414 files of patient between 2005 and 2015. Data was analyzed using Statistical Package for the Social Sciences (SPSS) software version 15.0. Chi-square test for trend was utilized to appraise a linear trend for incidence of malignancy during the study period. Significance level was considered as 0.05.Results: In this study 343 cases obtained from 27414 files (1.25%). The overall incidence of head and cancers in our study was 1.25%. The chi-square test for trend shows there is no evidence of significant linear trend for incidence of malignancy in 21 March 2005 through 22 September 2015. Conclusions: Our study does not show any significant increase or decrease in the incidence of head and neck cancers. Judgment about increase or decrease incidence is not easy and to establish a causal relationship we need to evaluate the incidence of more prevalent risk factors such as tobacco and alcohol in these patients simultaneously.

Keywords:

cancer , head and neck , incidence