In China, esophageal cancer, gastric cancer and colorectal cancer account for 50% of all cancer cases. Gastric cancer alone causes 500000 deaths every year. It is worth noting that nearly 85% of the patients with digestive tract cancer in China were in the middle and advanced stage at the time of diagnosis, and the five-year survival rate was only 36%. On the contrary, quite a few people are unwilling to undergo gastrointestinal endoscopy for early screening of digestive tract tumors, among which fear of pain is a very important reason. Is it really difficult to do gastrointestinal endoscopy? To this end, the reporter paid a special visit to the digestive endoscopy center of Zhujiang Hospital of Southern Medical University to understand the latest development of digestive endoscopy. "No examination without symptoms" is a misconception of early screening of digestive tract tumors. Enter the digestive endoscopy center of Zhujiang Hospital, which covers an area of more than 1500 square meters and includes 12 examination rooms, including one endoscopic intervention examination room and one negative pressure operating room, equipped with high-definition endoscopic system and endoscopic diagnosis and treatment supporting equipment. Wang Xinxin, director of the gastroenterology department of the hospital, introduced to the reporter: "At present, there are nearly 200 cases of gastrointestinal endoscopy in the digestive endoscopy center every day. These patients often come to the hospital only when they have symptoms, and the proportion of early screening for tumors is not high. Many people think that they are not uncomfortable at ordinary times, and they do not do gastrointestinal endoscopy in time when they have gastrointestinal symptoms occasionally. However, precancerous lesions such as gastric polyps, low-grade intraepithelial neoplasia of the stomach, colorectal adenomas and so on rarely have early symptoms. When gastric cancer causes When you have symptoms such as epigastric pain and hematochezia caused by colorectal cancer, the tumor is often in the middle or late stage. " In recent years, the incidence rate of digestive tract tumors in China has increased year by year, especially the incidence rate of colorectal cancer has jumped to the second place, with 550000 new cases each year. Wang Xinxin specifically called on the public to pay attention to the early screening of digestive tract tumors. Painless gastroenteroscopy and capsule endoscopy are comfortable to be examined. "The early diagnosis of esophageal cancer and gastric cancer mainly depends on gastroscopy, and the early diagnosis of colorectal cancer mainly depends on colonoscopy." Wang Xinxin pointed out that high-definition and magnifying staining endoscopes are powerful tools for early screening and diagnosis of digestive tract tumors. "The digestive endoscopy center of Zhujiang Hospital is equipped with the most advanced endoscopic equipment at present, which can magnify and carefully observe the lesions by tens of times, making it easier to find small cancerous lesions at early stages." Some people can't accept gastroenteroscopy, thinking that it is painful. Wang Xinxin responded: "in fact, this situation has been improved for a long time. Now painless gastroenteroscopy, capsule endoscopy and other technologies are very mature, and gastroenteroscopy is far less painful than people imagine. Now there are painless gastroenteroscopy and enteroscopy, and precision anesthesia is applied. The whole process takes about 10-30 minutes. After the examination, people wake up and hardly feel uncomfortable." Mr. Zhang, 49, from Chaozhou, likes drinking tea and has a drinking history of decades. Recently, during his physical examination in Zhujiang Hospital of Southern Medical University, he found a 20 × 10mm flat red area with rough surface mucosa. Tissue biopsy confirmed high-grade intraepithelial neoplasia of the esophagus, that is, early esophageal cancer. Through endoscopic submucosal dissection, doctors can completely peel off the whole lesion, and early esophageal cancer can be cured without surgery.