RT Journal Article T1 Primary ovarian endometrioid stromal sarcoma presenting with reno‑ureteral colic A1 Bueno-Moral-Ana Isabel, A1 Vilches-Jiménez-José Carlos, A1 Martínez-Bañón-Carmen, A1 Díaz-Huesca-Manuel Jesús, A1 Jiménez-López, Jesús Salvador K1 Ovarios - Cáncer AB Endometrioid Stromal Sarcomas are an infrequent group of mesenchymal tumors that we must takeinto account in the differential diagnosis despite representing only 0.2% of tumors of the female genital tract, as theycan go unnoticed until advanced stages.Case presentation: Fifty-fourth year-old woman referred from the Urology department due to incidental finding ofadnexal mass in MRI during examination after renoureteral colic, in the case of a 50 mm solid cystic mass in LE. MTwere within the normal range, and the CT scan observed this mass in contact with the left ureter. The surgery wascompleted with hysterectomy and contralateral adnexectomy without incident and chemotherapy treatment wasnot added. The pathological result was ovarian tissue with low-grade endometrial sarcoma. Currently, after two yearsof follow-up, the patient remains stable without any recurrence of disease.Conclusions: Endometrioid stromal sarcomas are rare tumors that originate in the endometrial stroma, the ovarianlocation being rare. Management lies in surgical treatment, and adjuvant therapy is sometimes necessary in advancedstages. PB Springer Nature SN 1472-6874 YR 2022 FD 2022-12-03 LK https://hdl.handle.net/10630/44761 UL https://hdl.handle.net/10630/44761 LA eng NO Moral AIB, Jiménez JCV, Bañón CM, Díaz Huesca MJ, González MV, López JSJ. Primary ovarian endometrioid stromal sarcoma presenting with reno-ureteral colic. BMC Womens Health. 2022 Dec 3;22(1):491. doi: 10.1186/s12905-022-02046-9. PMID: 36463169; PMCID: PMC9719167. DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 3 mar 2026