Can gastroscope detect esophagus cancer

When gastroscopy is done, it can be found and diagnosed as esophageal cancer. In the process of gastroscopy, it is necessary to pass through the esophagus. You can directly observe the morphology, color, presence of tumors, presence of ulcers, etc. of esophageal mucosa through gastroscopy. If you suspect that there are bad lesions, you can also take esophageal mucosa tissues under gastroscopy to make pathological examination to confirm whether there is esophageal cancer. Therefore, it is completely possible to detect early esophageal cancer lesions through gastroscopy. If the esophageal cancer has been relatively late, often in the process of doing gastroscopy, gastroscopy can not pass through the narrow esophagus, so may not be able to observe the esophageal cancer distal mucosa.