Dysphagia is one of the main symptoms of esophageal cancer, but dysphagia does not necessarily mean esophageal cancer. There is a disease called cardia insipidus, which means that the muscles at the junction of esophagus and stomach (cardia is located between the two) are not relaxed, so that patients have difficulty in eating and food enters the stomach slowly, some patients have difficulty in swallowing, vomiting after meals, and serious patients have malnutrition, and examination reveals that esophagus is dilated and The esophagus was found to be dilated and very thick. The cause of this disease is not too clear, and only a barium meal or gastroscopy is needed to confirm the diagnosis. There are many treatment methods, you can do a probe or balloon dilation under gastroscopy, stent the esophagus, inject botulinum toxin into the cardia under gastroscopy, do a new treatment method is to make a tunnel under the mucosa of the esophagus and cut off the cardia muscle, which is less invasive than surgery and heals faster.