prolapsed hemorrhoid

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Related to prolapsed hemorrhoid: thrombosed hemorrhoid


an enlarged (varicose) vein in the mucous membrane inside or just outside the rectum; called also pile.

Internal hemorrhoids usually are first noticed when minor bleeding occurs with defecation. Pain occurs rarely, unless there is an associated disorder such as an anal fissure, thrombosis, or strangulation of the affected vein. External hemorrhoids produce varying degrees of pain, feelings of pressure, itching, irritation, and a palpable mass. Bleeding occurs only if the external hemorrhoid is injured or ulcerated and begins to break down.

Hemorrhoids are caused by increased pressure on the veins of the anus. Prolonged sitting, constipation, and hard, dry stools that are difficult to pass can lead to straining and sitting at stool for long periods of time, all of which add pressure on the anal veins. Failure to follow through on the urge to defecate can also lead to hemorrhoids. In women, probably the single most common cause is pregnancy.

External hemorrhoids can be treated by local applications of cold and an astringent cream, by sitz baths, and by avoidance of constipation. Internal hemorrhoids may require sclerosing or cryosurgery to obliterate the affected tissue. More advanced, chronic hemorrhoids usually must be removed surgically by ligation and excision (hemorrhoidectomy) or by barron ligation.
Types of hemorrhoids.
external hemorrhoid one distal to the pectinate line.
internal hemorrhoid one 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 an internal hemorrhoid that has prolapsed sufficiently and for a long enough time for its blood supply to become occluded by the constricting action of the anal sphincter.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
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prolapsed hemorrhoid

The protrusion of an internal hemorrhoid through the anus.
See also: hemorrhoid
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
The purpose of this article is to prove the effectiveness of THD in reducing 4th degree prolapsed hemorrhoids as a safe one-day procedure with minimal-to-none pain and other early, hemorrhoidectomy--associated, postoperative symptoms.
These patients had severe mucosal prolapse and, as seen in pictures, ligation of all arteries accompanied by a continuous suture placed above the dentate line can effectively reduce and fix even prolapsed hemorrhoids. We believe that THD with mucopexy can be safely used in advanced fourth degree hemorrhoids as a safe one-day procedure with immediate visible results.
94% of patients with prolapsed hemorrhoids avoided surgery
The benefits of stapled anopexy over open hemorrhoidectomy in the treatment of prolapsed hemorrhoids are most evident in the first few days postoperatively British investigators reported.