hemorrhoidal veins

hem·or·rhoi·dal veins

obsolete term for rectal veins. See: inferior rectal veins, middle rectal veins, superior rectal vein.
References in periodicals archive ?
Common, but rarely a serious risk to health, hemorrhoids are the result of too much pressure on the hemorrhoidal veins in the rectum.
But, if the pressure and swelling continue, the hemorrhoidal veins may stretch out of shape, sometimes so much that they bulge through the anus to the outside of the body.
Eating the right amounts of bran (the outer coating of grains, available mainly as cereals), as well as fruits, vegetables, and whole grains results in a soft, bulky stool that is easily eliminated without strain or pressure on the hemorrhoidal veins.
The pressure of the fetus in the abdomen, as well as hormonal changes, cause hemorrhoidal veins to enlarge.