Twin pregnancy with a fetus in each half of a uterus didelphys.

A rare case of a twin pregnancy with a fetus in each half of a uterus didelphys (double uterus, double cervix and septate vagina) is reported. A longitudinal vaginal septum and two portios were detected during the first labor of this patient. During her second pregnancy ultrasonography was performed in the 16th week, and pregnancy was detected in each half of the double uterus. Both fetuses were of similar size and corresponded to the gestational age. A completely separated double uterus was confirmed by ultrasonography. In the 38th week a female and a male infant were delivered by cesarean section. The follow-up of this pregnancy and the management of the labor are reported.