Citation, DOI, disclosures and article data
Citation:
Campos A, Khoshnaw K, Hacking C, et al. Umbilical arterial aneurysm. Reference article, Radiopaedia.org (Accessed on 24 Feb 2025) https://doi.org/10.53347/rID-13568
An umbilical arterial aneurysm (UAA) is an extremely rare but potentially lethal vascular anomaly which is usually detected in utero.
Location
It tends to favor the placental end of the umbilical artery in the cord.
Associations
Concurrently associated anomalies are thought to be high and include
Ultrasound
May be seen as a cystic to elongated dilatation in relation to an umbilical artery. Color Doppler interrogation may show non-pulsatile turbulent flow.
Treatment and prognosis
The presence of a UAA can be lethal. When there are no associated anomalies and the fetus is potentially viable otherwise, some recommend delivery as soon as fetal lung maturity is assured when this diagnosis is made prenatally 5.
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2. Hill A, Strong T, Elliott J, Perlow J. Umbilical Artery Aneurysm. Obstet Gynecol. 2010;116 Suppl 2(2):559-62. doi:10.1097/AOG.0b013e3181e7d280 - Pubmed
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3. Berg C, Geipel A, Germer U, Gloeckner-Hofmann K, Gembruch U. Prenatal Diagnosis of Umbilical Cord Aneurysm in a Fetus with Trisomy 18. Ultrasound Obstet Gynecol. 2001;17(1):79-81. doi:10.1046/j.1469-0705.2001.00313.x - Pubmed
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4. Shen O, Reinus C, Baranov A et-al. Prenatal diagnosis of umbilical artery aneurysm: a potentially lethal anomaly. J Ultrasound Med. 2007;26 (2): 251-3. J Ultrasound Med (full text) - Pubmed citation
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5. Sepulveda W, Corral E, Kottmann C et-al. Umbilical artery aneurysm: prenatal identification in three fetuses with trisomy 18. Ultrasound Obstet Gynecol. 2003;21 (3): 292-6. doi:10.1002/uog.69 - Pubmed citation
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6. Harold Fox, Neil Sebire, MB, BS, FRCPath. Pathology of the Placenta. (2007) ISBN: 9781416025924 - Google Books
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