The results of the complex clinico-morphological study of the effect of 17-a-hydroxyprogesterone-caproate are reported in 71 patients aged from 37 to 75. Stage I was noted in 17 patients, stage II--in 51, stage III--in 3. A total dosage was 5,0; 10,0; 20,0 and 30,0 for the course of treatment. Following the hormonal therapy all these patients were subjected to surgery. To study the hormonal pathomorphism specimens from the uterine cavity were assayed histologically and cytologically prior to and during the hormonal therapy, the removed specimen was examined after the operation. The clinico-morphological studies indicated that 17 GPC shows the antitumor effect in endometrial cancer, so the complete tumor regression seems to be possible. The antitumor effect is mostly pronounced at initial stages of the disease and with high-differentiated tumors. The data obtained may be used to solve the problem on the purposeful application of 17 GPC either in the complex of therapeutic measures or as a separate method of treatment.
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