Esophageal cancer is a kind of disease with high incidence in China, especially in some high incidence areas, which is very much related to local dietary habits, and the symptoms are not too obvious in the early stage, so many people do not know its symptoms too well after it reaches the late stage. Food reaction This is one of the symptoms of esophageal cancer in advanced stage, which often appears when the difficulty in swallowing is aggravated, and the reflux is not big, containing food and mucus, and may also contain blood and pus. Difficulty in swallowing Advanced esophageal cancer symptom is progressive difficulty in swallowing, which is the main symptom of many people when they go to the clinic for consultation. Since the wall of esophagus is elastic and expandable, this symptom will only appear when about 2/3 of the circumference of esophagus is infiltrated by cancer. Other symptoms of esophageal cancer in advanced stage When esophageal cancer develops into advanced stage, the cancer will cause hoarseness if it presses on the recurrent laryngeal nerve; invasion of phrenic nerve can cause hiccups or phrenic nerve paralysis; compression of the trachea or bronchial tube can cause shortness of breath and dry cough; and erosion of the aorta can cause fatal hemorrhage.