Esophageal cancer has a common characteristic with other cancers, that is, there will not be any obvious symptoms at the beginning of the disease, and there will only be some common discomforts, so most people will not pay much attention to it, which will let the disease develop quietly to the middle and late stages, resulting in increasing difficulty in treatment. Therefore, if patients are not able to judge by symptoms, they have to rely on professional diagnostic technology for detection, so as to ensure the first time detection of the disease. There are many kinds of esophageal cancer detection methods, and there are different diagnosis methods for patients with different conditions. Generally speaking, it is believed that the occurrence of esophageal should go through the stages of epithelial atypical hyperplasia, carcinoma in situ, invasive carcinoma and metastatic carcinoma. Atypical hyperplasia and carcinoma in situ can be completely cured. Esophageal squamous epithelial atypical hyperplasia is an important precancerous lesion of esophageal cancer, and it usually takes several years or even a dozen years from atypical hyperplasia to cancer. About half of the patients can be cured, but when metastatic cancer comes, it is less likely to be cured and generally can only be controlled, therefore, esophageal cancer focuses on early diagnosis. So how to detect esophageal cancer? 1.Esophageal exfoliative cytology examination The most common examination method for esophageal cancer is esophageal exfoliative cytology examination, which is the first choice for early diagnosis of esophageal cancer because it is not only simple but also less painful for the examinees. 2.Barium x-ray imaging Barium x-ray imaging is also a common method to examine this disease. Most of these methods can detect early cancer signs such as thickened esophageal mucosa, tortuous or dashed interruption; or hairy esophageal edge; or small filling defect; or small niche shadow; or limited wall stiffness; or barium retention. 3.Fiber endoscopy Clinical examination of esophageal cancer can also be performed by fiber endoscopy, which can detect more than 85% of early esophageal cancer. 4.Esophageal endoscopic ultrasonography The examination of esophageal cancer necessarily requires examination of patient’s esophagus, so esophageal endoscopic ultrasonography is also a kind of examination for this disease, which can accurately determine the depth of infiltration of lesions in the esophageal wall; can measure the abnormal enlarged lymph nodes outside the wall; can distinguish the lesions in the esophageal wall parts more easily. 5.Esophageal exfoliative cytology examination is one of the common methods for diagnosis of esophageal cancer, which is relatively simple, less painful for patients and has low misdiagnosis rate. 6.CT scan examination of esophageal cancer CT scan can clearly show the relationship between esophagus and adjacent mediastinal organs, but it is difficult to detect early esophageal cancer; CT cannot identify whether the lymph nodes of normal volume have metastasis or not, and it cannot be sure whether the enlarged lymph nodes are caused by inflammation or metastasis, and it cannot detect metastatic lymph nodes less than 1cm in diameter, so combining CT and X-ray examination can help improve the diagnosis and staging of esophageal cancer. The combination of CT and X-ray examination can help improve the diagnosis and staging level of esophageal cancer. The above are some of the more accurate clinical methods for detecting esophageal cancer, and I hope you are familiar with these methods. Regular detection methods can not only detect the disease in time, but also help patients accurately find out the cause of the disease.