Double pregnancy in Didelphys Uterus

Uterus didelphys is a congenital malformation of the Müllerian duct that occurs due to complete failure of the ipsilateral ducts. Müllerian duct anomalies have a prevalence of 2-3%, with 11% and 43% having uterus didelphys and renal anomalies, respectively. We want to report the case of a patient with uterus didelphys and pregnancy in both uteri. Case presentation: A 26-year-old patient had a previous cesarean section in 2016 due to breech presentation. She was referred with a diagnosis of twin pregnancy at 26 weeks and 2 days. The ultrasound and the report indicated uterus didelphys with one fetus in each uterus. On examination, the speculum showed two cervices, but no septum was observed. The patient was treated as a normal twin pregnancy until 34 weeks. After lung maturation, the patient was scheduled for elective cesarean section. A 2600g female baby girl with an Apgar score of 8/8 and placental weight of 415 g was delivered. An 1840 g female baby girl with an Apgar score of 9/9 and placental weight of 300 g was delivered. The patient and both babies performed well. Conclusions: Uterus didelphys is a rare anomaly and accounts for 8% of congenital anomalies of the female reproductive tract, often undiagnosed. It occurs in 0.3% of the total population and 0.1% to 0.5% of the healthy fertile population. In most cases, this anomaly is asymptomatic and is detected accidentally, which probably explains the inaccurate assessment of its frequency.