Umbilical vessels pathology
Introduction
SUA — single umbilical artery.
Clinical signs
- about 1% of singletons at term, up to 10 % of twins
- common association with some malformations e.g. sirenomely, trisomy 18, 13, VACTERL
- occult malformations (renal in particular) should be searched for in an otherwise healthy infant with SUA
- association between low birth weight and SUA is controversial