肿瘤侵袭程度与转移关系的探讨

RELATIONSHIP BETWEEN DEGREE OF INVASION AND TUMOR METASTASIS

目的 研究肿瘤侵袭程度与转移发生的关系.方法 选用可移植性肿瘤模型小鼠组织细胞肉瘤L_1,接种在近交系615小鼠爪垫内侧皮下,在肿瘤生长后1、3、5、10、20、30和40天分七批处死动物,组织学检查肿瘤侵袭程度和转移发生的关系.结果 肿瘤局部侵袭达Ⅲ～Ⅳ级时才发生肿瘤转移,早期出现引流淋巴结转移,肺转移出现时间晚于淋巴结转移.结论 根据肿瘤生长时间并结合侵袭转移程度与扩散范围,将肿瘤发展演进过程分为潜伏期、侵袭期和转移期,在肿瘤侵袭期,又可再分为侵袭早期、中期和晚期;在肿瘤转移期,也可再分为转移早期、中期和晚期.

PURPOSE To provide evidence for the relationship between degree of invasion and tumor metastasis. The tumor cells of transplantable mouse histiocytic sarcoma (L1) were inoculated at the right hind footpads of inbred 615-strain mice. METHODS Once bearing the tumor, all the mice were sacrificed respectively on the 1st. 3th, 5th. 10th, 20th, 30th, and 40th day as to observe the degree of tumor invasion and the process of tumor metastasis. RESULTS When the degree of tumor invasion was grade Ⅲ or Ⅳ , the metastasis of tumor cells was found earliest in draining lymph nodes. However, the tumor metastasis in lung appeared later than in lymph nodes. CONCLUSION According to the time of tumor growth and degree of invasion and metastasis, the authors suggest a new classification for cancer staging, namely, latent, invasive and metastatic stages. During the stage of tumor invasion, it is redivided into early, middle and late invasive phases. During the stage of tumor metastasis, it is redivided into early, middle and late metastatic phases.