”Our hospital has introduced advanced gastrointestinal ultrasound, which can confirm benign and malignant gastric diseases without intubation, and is available with the examination”, a slogan that often appears on radio, TV, newspapers and other media. This advertisement attracts many people who are afraid of doing gastroscopy and want to confirm the diagnosis of stomach diseases. Ultrasound is an examination based on the working principle that the feedback echoes are different according to the different densities of the examination site, and is mostly used for substantial organs, such as the heart. However, the air in the stomach has the same density, which does not reflect the actual situation at all. In vitro gastrointestinal ultrasound cannot confirm the diagnosis of early and mid-stage gastric cancer. Regular hospitals will not do so. Early gastric cancer not only has hidden symptoms, but also is difficult to be detected by general examination means such as blood sampling, ultrasound and CT: the early stage of gastric cancer may only have a little change in the color of gastric mucosa, and the current technology such as CT and color ultrasound cannot be able to capture such a small change. The simplest examination instrument to determine whether the stomach disease is benign or malignant is gastroscopy, which is also the “gold standard” to confirm the diagnosis of gastric cancer. Through gastroscopy, doctors can visually observe the real situation in the stomach, and if pathology is needed to confirm the diagnosis, biopsies can be taken through gastroscopy for further testing. With the development in recent years, gastroscopy has become more and more fine, and painless gastroscopy technology has been quite mature, patients can receive gastroscopy in a painless state, people can not have to talk about gastroscopy. Gastroscopy combined with visual observation and pathological analysis can make accurate judgment on early gastric cancer and precancerous lesions. That is why in gastroenterology, doctors will recommend gastroscopy for patients who are old and have not had gastroscopy according to their medical history, and gastroscopy can exclude or detect gastric cancer at an early stage.
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