PMC6077576_01
Cross-sectional images of the fetal pelvis: (a) at 20 weeks of gestation showing with color Doppler the two umbilical arteries around the fetal bladder and (b) at 29 weeks of gestation with only one umbilical artery.
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fig1
A 21-year-old gravida 1 para 0 patient presented at 20 weeks for a routine anatomy scan that revealed normal anatomy survey including two umbilical arteries (Figure 1(a)). Ultrasound at 29 weeks revealed a single umbilical artery (Figure 1(b)) raising the suspicion for a pathological process.
Cross-sectional images of the umbilical cord (gross (a) and histologic (H&E) (b)) showing thrombosis of one of the umbilical arteries.
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PMC6077576_01_CRIOG2018-6324362.002.jpg
fig2
Placental pathology showed thrombosis of one of the umbilical arteries with necrosis of the medial myocytes (Figures 2(a) and 2(b)).