hemorrhoids (hem´o-roydz)

A varicose condition of the external hemorrhoidal veins causing painful swellings at the anus.piles; [G. haimorrhois, pl. haimorrhoides, veins likely to bleed, fr. haima, blood, + rhoia, a flow]
cutaneous h. hyperplasia of the connective tissue in one or more of the normal radiating folds of the skin immediately surrounding the anus.
external h. dilated veins forming tumors at the outer side of the external sphincter.
internal h. dilated veins beneath the mucous membrane within the sphincter.


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