hemorrhoidal vein


Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to hemorrhoidal vein: portal vein
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.hemorrhoidal vein - any of several veins draining the walls of the anal canal and rectumhemorrhoidal vein - any of several veins draining the walls of the anal canal and rectum
vein, vena, venous blood vessel - a blood vessel that carries blood from the capillaries toward the heart; "all veins except the pulmonary vein carry unaerated blood"
References in periodicals archive ?
Lower end of the oesophagus and cardia through the gastro-oesophageal veins, the anal canal via the hemorrhoidal veins, in the falciform ligament via the umbilical veins, in the abdominal wall and retroperitoneum.
The pressure of the fetus in the abdomen, as well as hormonal changes, causes hemorrhoidal veins to enlarge.
Common, but rarely a serious risk to health, hemorrhoids are the result of too much pressure on the hemorrhoidal veins in the rectum.