Epidemiological trends of oropharyngeal and oral cavity squamous cell carcinomas in Northern New England, 2000-2013.

BACKGROUND: This study examines the epidemiological trends of oropharyngeal squamous cell carcinoma (OPSCC) and oral cavity squamous cell carcinoma (OCSCC) in Northern New England. METHODS: Data were obtained from the Maine, New Hampshire and Vermont cancer registries. The age-standardized incidence rates (ASIR), age-specific incidence rates, and annual percentage changes (APC) for OPSCC and OCSCC were calculated using Joinpoint regression. RESULTS: The overall ASIR for OPSCC in Northern New England increased by 54.2% from 2000 to 2013 with an increase of 61.5% and 27.3% in men and women, respectively. Overall ASIR for OCSCC, on the other hand, declined throughout 2000 to 2013 by 6% and among men by 11%. In joinpoint analyses, the overall ASIRs for OPSCC significantly increased at an APC of 3.15 from 2000 to 2013, whereas the ASIRs for OCSCC remained stable at an APC of - 0.26. In men, ASIRs for OPSCC significantly increased (APC: 3.46), while that of OCSCC remained stable at an APC of - 0.87. In women, the ASIRs remained stable for both OPSCC and OCSCC at an APC of 1.97 and 0.49, respectively. For patients in the 6th decade of life, the age-specific incidence rates for OPSCC increased significantly at an APC of 3.06, also among those in the 7th and 8th decade with a significant increase at an APC of 4.98 and 3.51 per year, respectively. There were no significant changes in the APC of patients with OCSCC with respect to age group. CONCLUSION: The overall incidence of OPSCC is increasing in Northern New England, specifically among men. Given the etiological association between OPSCC and HPV, vaccination against HPV should be effectively encouraged among the populace. The efforts on tobacco cessation, abstinence, and alcohol abuse control should be continually expanded in order to bring about a decreasing trend in OCSCC.

Trends in Human Papillomavirus-Related Oropharyngeal Squamous Cell Carcinoma Incidence, Vermont 1999-2013.

This study examines trends in age-adjusted incidence rates of human papillomavirus (HPV)-related oropharyngeal squamous cell carcinoma (OPSCC) in comparison to oral cavity proper squamous cell carcinoma (OSCC) in the population of Vermont from 1999 to 2013. Data on cases of oral and pharynx cancers diagnosed in Vermont between 1999 and 2013 were obtained from the Vermont cancer registry. The age-adjusted incidence rates and annual percentage change of HPV-related OPSCC and OSCC were calculated using Joinpoint trend analysis. Four hundred and thirty-one cases of HPV-related OPSCC were diagnosed from 1999 to 2013. Males constituted 83% (P < 0.0001) of the cases and the 6th decade of life marked the highest incidence. The overall age-adjusted incidence rates for HPV-related OPSCC significantly increased (from 2.39 to 3.86 per 100,000, P < 0.0001). In males, it significantly increased (from 3.62 to 6.93 per 100,000, P < 0.0001), while in females it remained stable (from 1.18 to 1.02 per 100,000, P = 0.28) during 1999-2013. The average rate of HPV-related OPSCC significantly increased by 4.4% annually (P = 0.004). In males the average rate significantly increased by 5.3% annually (P = 0.001) and in females the rate increased by 0.37% annually (P = 0.87). In contrast, age-adjusted overall incidence rates for OSCC significantly decreased (from 3.99 to 3.35 per 100,000, P = 0.018). The overall rate of OSCC decreased by 0.96% annually (P = 0.37) and the highest incidence of cases was in the 7th decade of life. In conclusion, there was an increasing trend of HPV-related OPSCC, specifically in males, and there appears to be a decreasing trend of OSCC in Vermont.