现已很清楚,大多数肿瘤致死的原因在于它们能够播散到远处器官并在这些部位增殖。因此,控制肿瘤的一个重要方面并不在于消除原发肿瘤,而是在于消灭播散的肿瘤灶。在转移过程中,肿瘤细胞可与免疫系统的各种不同因素直接接触。将形成转移灶的瘤细胞与实体肿瘤中的细胞不同,它们必然是分散的细胞或是小的细胞团循环于血液中,因此十分容易与各种免疫性的或非免疫性的宿主因素超反应。因此,就理论上说 It is now clear that the reason that most tumors die is that they can spread to distant organs and proliferate in these areas. Therefore, an important aspect of controlling tumors is not the elimination of primary tumors but the elimination of disseminated tumor foci. During metastasis, tumor cells can be in direct contact with various factors of the immune system. The tumor cells that form metastases are different from those in solid tumors. They must be dispersed cells or small cell clusters circulating in the blood, so it is very easy to hyperreact with various immune or non-immune host factors. . Therefore, theoretically speaking