Introduction/Background The aim of this study was to determine the epidemiology and clinicopathological characteristics of the borderline ovarian tumors (BOTs). Additionally we sought to characterize the outcomes of the borderline ovarian management and identify variables affecting survival.

Methodology A retrospective study of 49 patients with BOTs all stages taken together treated or referred to our institutions was conducted over a period from June 2016 to july 2021.Data was analyzed by using SPSS Statistics for Windows, Version 23.0.

Results The median age was 43.3 (range=21–61) years. The majority of BOTs was serous tumors (61.2%) followed by mucinous tumors (36.7%) and less common histotypes as Endometrioid borderline tumours (2.1%). In the case of 34 patients (66.7%) a frozen section was taken intraoperatively which matched the definitive histological result in 80,5%. BOTs are mainly diagnosed at an earlier stage (34 cases at FIGO stage IA) 8 patients at stage IB and 3 patients at stage IC on the other hand 2 patients at stage IIIB and finally 2 patients at stage IIIC.All patients underwent surgery. We performed conservative treatment in Nineteen patients (38.7%). It consists of ovarian cystectomy and unilateral adnexectomy . Thirty patients (61.2%) underwent radical treatment which consist of bilateral adnexectomy and hysterectomy.Three patients with BOTs staged IIIB and IIIC received adjuvant chemotherapy. During average follow-up of 5 years 4 patients developed tumor recurrence .

Conclusion Borderline tumours usually affect young women aged between 20 and 40. They are usually diagnosed at an early stage (stage-I disease) . Prognosis is generally excellent, and long-term risk of recurrence is low.