Tumors that occur in the esophagus are lesions formed by abnormal proliferation of esophageal squamous or glandular epithelium, and the course of the disease usually takes years or even decades. Therefore, some tumors can be detected and cured early. Symptoms Early symptoms are not obvious, but may include swallowing discomfort, choking sensation, burning sensation behind the sternum, pins and needles or friction-like pain. In the middle and late stage, the symptoms are progressive dysphagia, wasting and weakness, and continuous chest and back pain. Tumor compression may lead to hoarseness, food reflux, shortness of breath, dry cough, narrow pupils, sunken eyes, ptosis, and no sweating on the affected side of the face. Treatment principle Early diagnosis and early treatment, mainly surgery, supplemented by radiotherapy and chemotherapy. Primary prevention: to reduce the possibility of esophageal cancer by adopting good dietary and living habits. Eat less food containing more nitrite: pickles, kimchi, leftover vegetables. Eat less hard, hot, spicy and stimulating food. Eat slowly, chew and swallow slowly. Stop smoking and drinking. Keep your mouth clean. Match the diet reasonably to ensure balanced nutrition. Secondary prevention: People who live in areas with high incidence of esophageal cancer or those who have esophageal cancer patients in their family should have regular health checkups and gastroscopy on a regular basis. When the above mentioned symptoms of esophageal tumor appear, go to regular hospitals and choose gastroscopy in time for early diagnosis and treatment.