PMC7532851_01
showing placenta about 1.3cm from the internal cervical os
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F1
The placenta was located at the posterior uterine wall with the inferior edge seen about 1.3cm from the internal cervical os (Figure 1).
showing velamentous vessel overlying internal cervical os
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F2
A velamentous vessel was seen lying across the internal cervical os (Figure 2).
PMC7532851_02
transvaginal ultrasound with power Doppler showing the fetal vessel between a bilobed placenta
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F3
A further assessment with transvaginal ultrasound showed the vessel was between the succenturiate lobe and the main placenta on power Doppler (Figure 3).
transvaginal ultrasound with pulse wave Doppler showing arterial waveform in fetal vessel
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F4
Additional evaluation with pulse wave Doppler revealed an arterial waveform which was consistent with a fetal arterial vessel (Figure 4).
PMC7532851_03
two images stacked side by side showing an interconnecting vessel overlying the internal cervical os on power Doppler (A) and low lying bilobed placenta (B)
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F5
Further evaluation with transvaginal ultrasound revealed a vessel overlying the internal cervical os and connecting the two lobes of the placenta (Figure 5).
intraoperative image showing multiple aberrant umbilical vessels unprotected by Wharton s jelly (black pointer) at the lower uterine segment: the blue pointer shows umbilical vessels protected by the Wharton s jelly
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F6
Intraoperative findings revealed multiple umbilical vessels unprotected by the Wharton s jelly on the fetal membrane (Figure 6).