Why is physical examination normal, discover gastric cancer after a short time? Experts answer your questions

Why do some patients do gastroscopy last year, all normal, this year become gastric cancer? Zhao Dongbing, deputy director, chief physician and doctoral supervisor, cancer hospital, Chinese Academy of Medical Sciences. This work was awarded the excellent work of the first 2020 healthy China cancer prevention and control action health science competition, which was directed by the disease prevention and Control Bureau of the National Health Commission and hosted by the National Cancer Center.