URINE STROMAL TUMOR RESEMBLING OVARIAN SE X-CORD TUMOR - CASE-REPORT

Uterine tumors resembling sex-cord ovarian structures are exceptionall y rare. Clement and Scully divided them into two groups. The first gro up includes cases with less than 50 % and the second with more than 50 % sex-cord elements. Group one tumors show a higher incidence of recu rrences. We report a case of a 54-year-old women with a partly retrope ritoneal, cystic tumor 7 . 6 . 6 cm. Histologically, sex-cord differen tiation of more than 50 % was seen with positive immunostaining agains t vimentin, desmin and focally against myoglobin and cytokeratines. Th e reaction against EMA, CEA and S 100 was negative. The patient was tr eated by abdominal hysterectomy with bilateral salpingooovorectomy. Sh e shows no evidence of disease 2.3 years after the initial surgery. Ba sed on the light microscopic features and immunohistochemical pattern, the tumor was interpreted as arising from the endometrial stromal cel ls or multipotential uterine mesenchyme that showed diverse differenti ation toward ovarian sex-cord stroma and uterine smooth muscle with in terspersed stromal cell clusters.