Keywords esophageal cancer;gastric cardia cancer;precancerous lesion;high incidence area;multi-tumor related antigen;autoantibody;ELISA;immunohistochemistry;

• 食管癌;贲门癌;癌前病变;高发区;多种肿瘤相关抗原;自身抗体;酶联免疫吸附试验;免疫组织化学;