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  2. Hemorrhoid - Wikipedia

    en.wikipedia.org/wiki/Hemorrhoid

    They are composed of neither arteries nor veins, but blood vessels called sinusoids, connective tissue, and smooth muscle. [2]: 175 Sinusoids do not have muscle tissue in their walls, as veins do. [8] This set of blood vessels is known as the hemorrhoidal plexus. [2] Hemorrhoid cushions are important for continence.

  3. Perianal hematoma - Wikipedia

    en.wikipedia.org/wiki/Perianal_hematoma

    Perianal hematoma are caused by the rupture of a small vein that drains blood from the anus. [4] This rupture may be the result of forceful or strained bowel movement, anal sex or caused by heavy lifting, coughing or straining. Once the rupture has formed, blood quickly pools within a few hours and, if left untreated, forms a clot. [citation ...

  4. Anorectal varices - Wikipedia

    en.wikipedia.org/wiki/Anorectal_varices

    Anorectal varices are collateral submucosal blood vessels dilated by backflow in the veins of the rectum. [1] Typically this occurs due to portal hypertension which shunts venous blood from the portal system through the portosystemic anastomosis present at this site into the systemic venous system .

  5. Transanal hemorrhoidal dearterialization - Wikipedia

    en.wikipedia.org/wiki/Transanal_hemorrhoidal_de...

    Hemorrhoids are fed by arteries and drained by veins. The arterial blood supply is based on the superior rectal (hemorrhoidal) artery. Just as veins in the leg weaken and become prominent, hemorrhoidal veins also may become varicose, resulting in internal hemorrhoids or “piles”. Internal hemorrhoids are divided into four grades.

  6. 11 Surprising Causes Of Butt Pain (And What To Do About ... - AOL

    www.aol.com/news/11-surprising-causes-butt-pain...

    5. Hemorrhoids. Hemorrhoids are swollen blood vessels that form on the anus and rectum, according to the National Institute of Diabetes and Digestive and Kidney Diseases. There are two types ...

  7. How to Get Rid of Hemorrhoids at Home—Plus When to ... - AOL

    www.aol.com/lifestyle/rid-painful-hemorrhoids...

    Recovery from the surgical removal of hemorrhoids (a.k.a. hemorrhoidectomy) can be extremely painful, notes Dr. Bernstein, but it’s one of the most effective ways to get rid of hemorrhoids for good.

  8. Human anus - Wikipedia

    en.wikipedia.org/wiki/Human_anus

    Hemorrhoids are visible blood vessels from the internal or external venous plexuses of the anus. Haemorrhoids may; cause bleeding after passing a motion; be painful; cause an itch; or prolapse out of the anus. [9] Haemorrhoids are often associated with straining due to constipation, and pregnancy. [9]

  9. Anorectal disorder - Wikipedia

    en.wikipedia.org/wiki/Anorectal_disorder

    Doctors uses a variety of tools and techniques to evaluate the type of anorectal disorder, including digital and anoscopic investigations, palpations, and palpitations.The initial examination can be painful because a gastroenterologist will need to spread the buttocks and probe the painful area, which may require a local anesthetic.