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Prenatal 2-dimensional US image using Toshiba, Xario, SSA-660A machine at 16 weeks gestation showing (A) the abdominal wall cystic formation near the umbilical cord insertion and (B) the same cystic formation using color Doppler .
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US at 14 weeks showed a monochorionic, monoamniotic twin gestation with the demise of one fetus. US exam at 16 weeks in our institution showed an anterior abdominal wall cystic formation (33 mm in diameter) near the umbilical cord insertion in the surviving twin (Fig. 1).
PMC9674495_02
Prenatal 2-dimensional US image (Toshiba, Xario, SSA-660A machine) at 35 weeks gestation showing (A) the myelomeningocele, star indicating protrusion of neural tissue, (B) omphalocele and single umbilical artery cord.
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Fetal US suggested prenatal diagnosis of OEIS complex (Fig. 2).
Prenatal MR imaging at 35 weeks gestation ("Siemens, Esbree 1,5 T" machine) showing (A) the fetus in a breech position with liver  + bowel herniating into the omphalocele sac and myelomeningocele, star indicating protrusion of neural tissue. Sagittal - T2_haste_or_bh_4mm and (B) axial - T2_haste_TRS_bh_4mm view.
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MRI confirmed a lumbosacral neural tube defect 3 x 5 cm in size, omphalocele 6 cm in length (with liver and small bowel herniating into the sac), and absence of fetal bladder (Fig. 3).