Advanced stage of esophageal cancer does not refer to the length of the lesion, but the stage of the disease. Advanced stage of esophageal cancer means metastasis, so metastasis will definitely occur in advanced stage of esophageal cancer. In advanced stage of esophageal cancer, tumor cells can metastasize to more parts, such as liver metastasis, brain metastasis, lung metastasis, lymph node metastasis on the clavicle, etc. If the patient’s local esophagus is especially narrowed, which affects his normal diet, then the long-term malnutrition will lead to the patient’s wasting, anemia and weakness, etc. This condition is called locally advanced stage.