原发于食管黏膜的上皮细胞及黏膜下层腺组织发生的癌，称为原发性食管癌，其他任何组织器官的原发性恶性肿瘤，通过肿瘤细胞的直接浸润，或经淋巴播散和血道转移引起食管组织结构的破坏和癌变而发生的食管癌，称为继发性食管癌，包括继发性浸润性癌和继发性转移性癌。文章通过复习文献，对国内继发性食管癌的发病现状、发生机制、临床特征、诊断和治疗的现状及进展，提出讨论，供商榷。

The cancer which originates from esophageal mucosal epithelial cells and submucosal gland tissue, is called primary esophageal cancer; and the cancer which is caused by any other tissue or organ’s primary malignant tumors, either through direct infiltration of tumor cells or by lymphatic spread and hematogenous metastasis, is known as secondary esophageal cancer, which includes secondary invasive carcinoma and secondary metastatic cancer. This article reviewed the literature, and the current occurrence of secondary esophageal cancer, the mechanism of occurrence, the clinical features, the status and progress for diagnosis and treatment were summarized.