Conjoined Twins

Clinical Vignette Assessment

Question 1 of 10 Case 1
Clinical Case Case 1

A 29-year-old G1P0 woman at 17 weeks gestation is referred to a tertiary care center after a routine anatomy scan suggests a twin pregnancy with a shared body contour. A follow-up detailed transvaginal ultrasound confirms a single placenta and a single amniotic sac. The twins appear fused from the mid-chest to the umbilicus, with two separate heads and four limbs visible. Fetal heart rates are both within normal limits but are noted to be close together. The parents are anxious and ask about the next steps for evaluation.

Q1: What is the most important next step in the prenatal evaluation of these conjoined twins?