Since esophageal cancer has been diagnosed, it is a malignant tumor, not a benign tumor. Malignant esophageal cancer is mainly manifested as local masses in the esophagus that increase in size, resulting in esophageal obstruction, difficulty in swallowing, and in severe cases, difficulty in drinking water. The treatment of esophageal cancer is mainly based on the stage and location of esophageal cancer. If it is early stage esophageal cancer, timely surgery and resection will be performed; if it is advanced stage esophageal cancer, simultaneous radiotherapy and chemotherapy will be the main treatment. Different parts of esophageal cancer will be treated differently. Cervical esophageal cancer is mainly treated by radiotherapy, while lower esophageal cancer is mainly treated by surgical resection. Benign occupying lesions of esophagus mainly include lesions such as esophageal diverticula and cysts. Benign esophageal lesions mainly cause obstruction and stricture, but they will be cured by surgical resection and no distant metastasis will occur. Therefore, there is a clear distinction between benign and malignant.