Complete chorioamniotic membrane separation with constrictive amniotic band sequence and partially extraamniotic pregnancy – serial ultrasound documentation and successful fetosco…

Background: Chorioamniotic membrane separation (CMS) may result in constrictive amniotic bands around fetal limbs, the umbilical cord, as well as preterm rupture of membranes. Fetoscopic band release can be performed but may encounter difficult anatomical conditions. Case: A 35-year-old woman, gravida 3 para 0, was referred at 17 weeks of gestation with complete CMS, except at the placental insertion site of the umbilical cord. At 22 weeks, the amniotic membrane was partially disrupted and the lower fetal limbs were herniated into the extraamniotic cavity. A right-sided clubfoot was observed. At 23+6 weeks, groß…