umbilical arterial aneurysm
An umbilical arterial aneurysm (UAA) is an extremely rare but potentially lethal vascular anomaly which is usually detected in utero.
Pathology
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
- chromosomal anomalies
- single umbilical artery
Radiographic features
Antenatal 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 .
See also
Siehe auch:
und weiter:
Assoziationen und Differentialdiagnosen zu umbilical arterial aneurysm:
singuläre
Nabelschnurarterie (sNSA)