After daily use of practical pregnancy tests and widespread use of ultrasonography, pregnancy controls starts in early weeks and the number of adnexial masses which diagnosed in pregnancy increased. In this report, we presented 32 years-old women with 18 gestational weeks and adnexial mass at 9x10cm on the left adnexial area. After laparotomy, histopathological result was microinvasiv serous borderline tumor. Adnexal mass with pregnancy can be treated surgically or conservative. The measures of the mass, gestational weeks and the USG findings effect the decision of treatment way.
Keywords: Adnexal mass, pregnancy