What is the difference between gastroscopy and enteroscopy?

Gastroscopy and enteroscopy are two different examination methods, the difference lies in the examination site is different, the examination method is different, the scope of application is different, the preparation work is different. 1, the examination site is different Gastroscopy is mainly used to examine the esophagus, stomach, duodenum and other upper digestive tract diseases; enteroscopy is mainly used to examine the rectum, colon, ileum and other lower digestive tract diseases. Gastroscopy is to insert a flexible tube through the mouth or nose, through the esophagus to the stomach and duodenum, observe the mucosal changes and pathological examination; colonoscopy is to insert a flexible tube through the anus, into the rectum, gradually observe the entire colon and ileum, mucosal observation and pathological examination. 3. Different scope of application Gastroscopy is suitable for the diagnosis of upper digestive tract diseases, such as gastritis, gastric ulcer, esophageal cancer, gastric cancer, etc.; while enteroscopy is suitable for the diagnosis of lower digestive tract diseases, such as colitis, hemorrhoids, intestinal polyps, colon cancer, etc. 4. Different preparations Before gastroscopy, fasting is required for 8 - 12 hours; Before colonoscopy, it is necessary to clean the intestinal tract, such as taking laxatives.