Malignant

China has 1.2 billion people, it is estimated that 130 million people each year die of cancer, tumors have been the health of the people of our country constitute the second largest threat to survival. Linxian China is the world's highest-fat areas esophageal ,0-75-year-old cumulative mortality rate of esophageal cancer by 20%. Current inference, the lack of a broad variety of nutrients may be the main reason for the incidence at the same time, consumption of pickled vegetables and moldy foods, nitrosamines and food consumption of coarse physical injury also play a role.

Poor prognosis of esophageal cancer, mainly because the majority of the tumor is already advanced when symptoms can not be surgically removed. In order to fundamentally improve the survival rate, we must do the majority of cases of early diagnosis and treatment. Chinese Academy of Medical Sciences Cancer Institute and the NCI in the previous study, have been studied for 225 had endoscopy, in the mucosa before and after iodine staining can be seen on all mucosal lesions and a normal zone records, photographic and biopsy. Preliminary analysis of results showed that: the former can be seen staining the biopsy lesions, 63% of high-grade dysplasia and cancer, but not colored after staining of the biopsy in the region as high as 96%. The precise diagnosis of a high degree of atypical hyperplasia and cancer of the success of endoscopic technology, will enable us in the loop of the Taihang Mountain area can be high-risk individuals as their main means of screening.

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