A vascular anomaly of the umbilical cord; the absence of one umbilical artery in the umbilical cords of normal and abnormal fetuses.
D000013:Congenital Abnormalities; D005260:Female; D005315:Fetal Diseases; D006801:Humans; D011247:Pregnancy; D014469:Umbilical Arteries; D014470:Umbilical Cord / Q000002:abnormalities*; D054079:Vascular Malformations
ABNORMALITIES; UMBILICAL CORD/abnormalities