OBJECTWE: Ovarian cysts rarely develop in female fetuses and they may be accidentally detected in a routine ultrasonography performed for evaluation of the fetal health condition during pregnancy. The formation of ovarian cyst in fetus accompanies severe stimulation of maternal and placental hormones.
CASE: A 25 years old women in her first pregnancy that had a fetus with two cysts in ovary detected by ultrasonography. 4.5 months after delivery, these cysts were resolved spontaneously without any complication.
CONCLUSION: We can follow this patient with bilateral ovarian cysts with conservative treatment (without surgery) and we recommend surgical management in an emergency situation (i.e. rupture or torsion of the cysts).