Etiology of esophageal cancer

One of common malignant tumors in human esophageal cancer. About 30 million people worldwide each year die from esophageal cancer. China is a high incidence area of esophageal cancer, esophageal cancer deaths every year about 15 million people, accounting for nearly a quarter of cancer deaths. Esophageal cancer mortality rates vary greatly all over the country, according to the National Cancer Mortality survey statistics, China's population, adjusted esophageal cancer mortality rates for the lowest level of Yunnan Province (105/10 million), with a difference of 14 times the national level, and mortality Henan Province, the highest difference of 31 times. The incidence of esophageal cancer has obvious regional differences, our high incidence of esophageal cancer include: high incidence of the Taihang Mountains in north China: including Linxian, Henan Province, Hebei Cixian, Shanxi Yangcheng than a dozen cities and counties. Age of onset of the high age group, high, gradually decreased after the age of 70. Esophageal cancer death for men and women of China's combined average age of 63.49 years, the proportion of different ages, to the highest percentage of 55-74 year-old. This shows that esophageal cancer is a common disease in the elderly.