Antenatal Diagnosis of Type-3 Vasa Previa

doi:10.5005/jp-journals-10009-1689

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Antenatal Diagnosis of Type-3 Vasa Previa

Citation Information : Antenatal Diagnosis of Type-3 Vasa Previa. Donald School J Ultrasound Obstet Gynecol 2021; 15 (1):1-3.

DOI: 10.5005/jp-journals-10009-1689

License: CC BY-NC 4.0

Published Online: 01-03-2021

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Abstract

Regarding type-3 vasa previa, some branches exit the placental surface and subsequently re-enter at the placental cotyledons. We present a case of type-3 vasa previa diagnosed at 32 weeks of gestation. A 38-year-old pregnant Japanese woman was re-examined using transvaginal color Doppler due to suspected vasa previa on previous routine obstetric examination. Color Doppler clearly showed a small velamentous artery near the internal cervical os. At 37 weeks and 6 days of gestation, a planned cesarean section was performed, resulting in a viable, single female newborn weighing 2,726 g. Placental examination showed peripheral insertion of the umbilical cord with one aberrant vessel.

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Suekane T, Tachibana D, Pooh RK, et al. Type-3 vasa previa: normal umbilical cord insertion cannot exclude vasa previa in cases with abnormal placental location. Ultrasound Obstet Gynecol 2020;55(4):556–557. DOI: 10.1002/uog.20347.
Catanzarite V, Maida C, Thomas W, et al. Prenatal sonographic diagnosis of vasa previa: ultrasound findings and obstetric outcome in ten cases. Ultrasound Obstet Gynecol 2001;18(2):109–115. DOI: 10.1046/j.1469-0705.2001.00448.x.
Hata T, Takayoshi R, Koyanagi A, et al. Vasa previa depicted by simple clear flow. Donald School J Ultrasound Obstet Gynecol 2020;14(2):161–163. DOI: 10.5005/jp-journals-10009-1628.

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