ABSTRACT
10-15% of ovarian epithelial tumors are the borderline ovarian tumors (BOT-s). The prognosis in those cases is excellent with 5-years survival rates in the range of 95% in Stage I. The most of women suffering from BOT-s are young and they have not got any children. The distinct biology of this illness makes possible to change previous treatment of ovarian cancers. We are able operate the young women planning maternity in conservative way (uni or bilateral cystectomy, adnexectomy). We present a case of young woman with BOT-s with non-invasive peritoneal implants. The bilateral cystectomy, omentectomy and staging was done. At present this woman is in 16 week pregnancy with good health. This confirms rightness of conservative treatment in BOT-s.