What is a gastroscopy? Gastroscopy is performed with the help of a thin, flexible tube that is inserted into the stomach and, through a digital camera probe at the bottom, can look directly inside the stomach to see the changes in the stomach, even in the case of small lesions in the mucosa, and can directly clamp the suspicious lesion tissue for laboratory testing. Sometimes some special gastroscopes, such as ultrasound gastroscopy, can also understand the depth of suspicious lesions and the relationship with local tissues because of the addition of ultrasound capabilities to the probe. Why should I have a gastroscopy? Gastroscopy helps doctors evaluate symptoms such as upper abdominal pain, nausea, vomiting or difficulty swallowing. It can detect inflammation, ulcers or tumors in the esophagus, stomach and duodenum more accurately than an X-ray. In fact, gastroscopy is very important regardless of the diagnosis of any digestive tract disease or health examination. When can I consider gastroscopy? If you have the following conditions, you can consider going to a regular hospital for gastroscopy 1, long-term chronic and periodic epigastric pain or pain at the heart fossa, difficulty swallowing, incessant burping, and always a feeling of fullness; 2, unexplained loss of appetite and weight loss: severe gastric disease is usually the cause of loss of appetite and weight loss; 3, unexplained vomiting of blood, acid reflux and heartburn; 4, pain behind the sternum, obstructive feeling when eating, and suspected esophageal disease; 5, symptoms found in cases after gastric surgery, which can be detected by gastroscopy Lesions are found and followed up; 6. Stomach cancer screening for healthy people.