Individualization of indications for postoperative irradiation in stage I endometrial cancer

The results of the treatment of 550 Stages I-III endometrial cancer patients are analysed. The postoperative radiation therapy was employed in 311 (56.5 +/- 2.8%) patients. In the pathological Stage I 235 (50.5 +/- 3.2%) out of 465 women were irradiated postoperatively, but the distant irradiation was used in only 93 (20.6%), the others began prophylactic irradiation of vagina. With the aim of regression the nonparametric Cox model it was stated, that some factors, such as hormonosensitivity of the tumor, pathogenic type, histology, stage and mode of operation have a significant influence on survival, and the postoperative irradiation has not. The comparison of the results of treatment in Stage I revealed a slight tendency to increased survival in prognostically unfavourable subgroups with the aim of postoperative irradiation. The 5-year survival in Stage I 90.3%. The individualized indications for postoperative radiation therapy in Stage I endometrial cancer are elaborated deep myometrial invasion, lowering of differentiation of the tumors, hormonoresistence.