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paraumbilical veins


Definition: several small veins arising from cutaneous veins about the umbilicus running along the round ligament of the liver, and terminating as accessory portal veins in the substance of this organ; they constitute a portocaval anastomosis and are subject to varicosity during portal hypertension; varicose paraumbilical veins form the “caput medusae.”

Synonym(s): venae paraumbilicalesTA, Sappey veins

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.