Diamniotic Dichorionic Twin Pregnancy in Obstetrics & Gynecology — Case | General Gynecology | SMLE Q#438
SMLE Question #438
Obstetrics & Gynecology
General Gynecology
Last updated: February 2026
A 27-year-old primigravida at 37 weeks with a diamniotic dichorionic twin pregnancy is in active labor. Ultrasound shows no major fetal anomalies, and each fetus is estimated at 2800 g. The cervix is 6 cm dilated, membranes are intact, and there is no placenta previa or other obstetric complication. She asks whether a planned vaginal twin delivery is appropriate. Which fetal presentation is a contraindication to planned vaginal delivery in a twin pregnancy?
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