Hemorrhoid (redirected from internal hemorrhoid)

hemorrhoid /hem·or·rhoid/ (hem´ah-roid) prolapse of an anal cushion, resulting in bleeding and painful swelling in the anal canal.

Hemorrhoids: (A), internal; (B), external; (C), mixed; (D), thrombosed.

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external hemorrhoid  one in a vein of the inferior rectal plexus, below the pectinate line and covered with modified anal skin.

internal hemorrhoid  one in a vein of the superior rectal plexus, originating above the pectinate line and covered by mucous membrane.

prolapsed hemorrhoid  an internal hemorrhoid that has descended below the pectinate line and protruded outside the anal sphincter.

strangulated hemorrhoid  a prolapsed hemorrhoid whose blood supply has become occluded by constriction of the anal sphincter.

thrombosed hemorrhoid  one containing clotted blood.

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hem·or·rhoid (hm-roid)

n.

1. An itching or painful mass of dilated veins in swollen anal tissue.

2. hemorrhoids The pathological condition in which such painful masses occur. Also called piles.

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Hemorrhoid

An area around the anus where veins become dilated and the tissue swells, causing itching and pain.

Mentioned in: Enterobiasis