[The characteristics of Ehrlich carcinoma recurrence and metastasis]

It was shown that surgical removal of Ehrlich carcinoma growing i. m. in male mice F1 (CBA C57Bl/6) does not entail longer survival in comparison with intact tumor-bearing mice (59.4 and 62.2 days, respectively). Postoperative relapses appear in 40-60% of the animals, metastases in 100% of animals. Metastases were not observed in intact tumor bearing mice. The second-challenge tumor was not observed in operated mice despite metastatic growth and recurrences of the same tumor. We suggest that metastatic growth depends on the tumor cell features and that this process is controlled by host organism.