恶性肿瘤患者的予后和治疗前后有无转移关系密切。为此,详细了解转移的发生过程和机制以及影响转移的因素,至为重要。一、转移的概念恶性肿瘤转移与直接蔓延不同,系自原发灶通过淋巴或血行通道,在远隔原发灶的部位建立病灶,有人概括为“不连续性生长”。恶性肿瘤的转移,除淋巴源性及血源性外,也有沿体腔的转移。后者实为种植性生长,即癌细胞脱落到体腔或器官表面形成的转移。此外也有“接触性转移”,但甚 Patients with malignant tumors have close relationship with metastasis before and after treatment. For this reason, it is important to understand in detail the process and mechanism of the transfer and the factors that affect the transfer. First, the concept of metastasis Malignant tumor metastasis and direct spread is different from the primary tumor through the lymph or blood passage, the establishment of lesions in the distant primary lesions, it was summarized as “discontinuous growth.” Malignant tumor metastases, in addition to lymphatic origin and blood-borne, also have metastases along the body cavity. The latter is actually planting growth, that is, the transfer of cancer cells to the surface of the body cavity or organs. There are also “contact transfer” but