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  2. Solitary rectal ulcer syndrome - Wikipedia

    en.wikipedia.org/wiki/Solitary_rectal_ulcer_syndrome

    The treatment is particularly helpful for dyssynergic defecation (anismus). Research studies have shown that there is improved blood flow to the rectal mucosa after biofeedback therapy. [1] The overall rate of complete resolution of both symptoms and ulceration varies at 50-75%. [8] Stool frequency and straining effort decrease after this ...

  3. Angiodysplasia - Wikipedia

    en.wikipedia.org/wiki/Angiodysplasia

    A classic association is Heyde's syndrome (coincidence of aortic valve stenosis and bleeding from angiodysplasia). [4] In this disorder, von Willebrand factor (vWF) is proteolysed due to high shear stress in the highly turbulent blood flow around the aortic valve. vWF is most active in vascular beds with high shear stress, including ...

  4. Anal stricture - Wikipedia

    en.wikipedia.org/wiki/Anal_stricture

    Anal stricture or anal stenosis is a narrowing of the anal canal. [1] It can be caused by a number of surgical procedures including: hemorrhoid removal and following anorectal wart treatment. [ 2 ]

  5. Colorectal surgery - Wikipedia

    en.wikipedia.org/wiki/Colorectal_surgery

    Colorectal surgery is a field in medicine dealing with disorders of the rectum, anus, and colon. [1] The field is also known as proctology , but this term is now used infrequently within medicine and is most often employed to identify practices relating to the anus and rectum in particular.

  6. Bowel obstruction - Wikipedia

    en.wikipedia.org/wiki/Bowel_obstruction

    Depending on the level of obstruction, bowel obstruction can present with abdominal pain, abdominal distension, and constipation.Bowel obstruction may be complicated by dehydration and electrolyte abnormalities due to vomiting; respiratory compromise from pressure on the diaphragm by a distended abdomen, or aspiration of vomitus; bowel ischemia or perforation from prolonged distension or ...

  7. Intestinal pseudo-obstruction - Wikipedia

    en.wikipedia.org/wiki/Intestinal_pseudo-obstruction

    The total removal of the colon, called a colectomy or resection of affected parts of the colon may be needed if part of the gut dies (for instance toxic megacolon), or if there is a localized area of dysmotility. Gastric and colonic pacemakers have been tried. These are strips placed along the colon or stomach which create an electric discharge ...

  8. Stenosis - Wikipedia

    en.wikipedia.org/wiki/Stenosis

    Stenosis (from Ancient Greek στενός (stenós) 'narrow') is the abnormal narrowing of a blood vessel or other tubular organ or structure such as foramina and canals. It is also sometimes called a stricture (as in urethral stricture ).

  9. Neurogenic bowel dysfunction - Wikipedia

    en.wikipedia.org/wiki/Neurogenic_bowel_dysfunction

    Colorectal dysfunction due to spinal cord injury can be classified in to two types: an upper motor neuron lesion or lower motor neuron lesion. Problems with the upper motor neuron in a neurogenic bowel results in a hypertonic and spastic bowel because the defecation reflex centre, which causes the involuntary contraction of muscles of the ...