Umbilical arterial aneurysm

An umbilical arterial aneurysm (UAA) is an extremely rare but potentially lethal vascular anomaly which is usually detected in utero. 

Location

If tends to favour the placental end of the umbilical artery in the cord.

Associations

Concurrent associated anomalies are thought to be high and include

Antenatal ultrasound

May be seen as a cystic to elongated dilatation in relation to an umbilical artery. Colour Doppler interrogation may show non-pulsatile turbulent flow.

The presence of an 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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Article Information

rID: 13568
Tag: cases
Synonyms or Alternate Spellings:
  • Umbilical artery aneurysm
  • Umbilical arterial aneurysm (UAA)

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