Abstract: Objective The objective of this study was to analyze the morbidity and mortality of esophageal cancer in 2016 and the prevalence trend from 2012 to 2016 in Inner Mongolia cancer registration areas. Methods The data of esophageal cancer in Inner Mongolia cancer registration areas from 2012 to 2016 were collected.According to the stratification of urban and rural areas,gender,age,the incidence and mortality,standardized rate,cumulative rate,age-specific rate,and annual percentage change(APC)of esophageal cancer were calculated. Results In 2016,a total of 1,311 new cases and 791 deaths of esophageal cancer were reported in Inner Mongolia cancer registration areas.The crude incidence of esophageal cancer was 19.06/100,000,the age-standardized incidence rate by Chinese standard population(ASIRC)was 13.32/100,000,the age-standardized incidence rate by World standard population(ASIRW)was 13.66/100,000,and the cumulative rate(0~74 years old)was 1.65%.The mortality of esophageal cancer was 13.71/100,000,the age-standardized mortality rate by Chinese standard population(ASMRC)was 9.33/100,000,the age-standardized mortality rate by World standard population(ASMRW)was 9.55/100,000,and the cumulative incidence rate(0~74 years old)was 1.14%.In terms of time trends,the incidence and mortality of esophageal cancer changed steadily,with a slight downward trend.The APC was-0.42% and-0.46%,respectively,and the change trend was not statistically significant(P＞0.05). Conclusion The morbidity and mortality of esophageal cancer in Inner Mongolia cancer registration areas are higher than the national average,and prevention and control measures such as health education and early screening of the population should be further strengthened.

Key words: Esophageal cancer, Incidence, Mortality, Trend, Inner mongolia