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Diagnostic ultrasound ( PDFDrive )

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1486 PART IV Obstetric and Fetal Sonography

A

B

C

D

E

FIG. 43.32 Velamentous Cord Insertion. (A) and

(B) Transabdominal sonograms of second-trimester placenta

with cord insertion entering the membranes and not the

placental disc (arrow). See also Video 43.15. (C) Examination

of the placenta after delivery shows umbilical cord (arrow)

with fetal vessels coursing through the membranes into

the placental disc. (D) Transvaginal gray-scale and (E) color

Doppler sonograms of another pregnancy with a velamentous

umbilical cord insertion encroaching on the internal

cervical os (arrow).

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