Introduction/Background It has been reported that the incidence of ovarian tumours accompanying gestation is between 1–2.%.

Methodology In our study, 60 pregnant patient were included, who applied to tertied medical centre of gynecology and obstetrics policlinics in between january 2011–may 2015, and whose obstetric evaluations complied with the criterion.

Results During the antenatal track, 33 (%55) pregnannt patients were decided to be followed staying conservative under the control of adnexial masses for 26 (%43.3) pregnant patients operations in early pregnancy or evaluation of adnexial masses in caesarian, and/or malignity caused staging surgery was planned 1 (%1.7) pregnant patient was suggested therapotic termination and later chemoteraphy upon clear diagnosis of malignity in early pregnancy. Radiological diagnosis and track of adnexial masses via ultrasound was applied on 11 (18.3) pregnant patients, while magnetic resonance imaging scan wanted from 49 (%81.7) pregnant patients who were strongly doubted to have malignity of ultrasound .and the management/control of adnexial bulk of pregnancy was made through the magnetic resonance imaging symptom and interpretation. Ultrasound and magnetic resonance imaging symptoms were interpreted in the side of strong bening symptoms for 38 (%63) pregnant patients, while it was malign for 22 (%36.7) pregnant patients under the light of the pathologic results of operated patients, bening cyctic structures were detected on 44 (%73.3) pregnant patients, borderline cyctic structures on 3 (% 5) ang malign cyctic structures on 6 (% 10) of them myoma uteri was detected on 4 (%6.7) of the pregnant patients applied due to adnexial masses.

Conclusion This facilitates diagnosis as USG and MR are relative cheap and harmless. In this study when radiologic findings in 22 patients who show malignancy symptoms are compared to the post-op pathologic findings, only 8 (%36.4) patients were diagnosed as malignant tumours.

Disclosure Nothing to disclose.