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MEGARECTUM

Megarectum

Abnormal dilation of the rectum

Megarectum is a large rectum as a result of underlying nerve supply abnormalities or muscle dysfunction, which remains after disimpaction of the rectum

Megarectum

Megacolon

Abnormal dilation of the large intestine

2021. Szarka LA, Pemberton JH (July 2006). "Treatment of megacolon and megarectum". Curr Treat Options Gastroenterol. 9 (4): 343–50. doi:10.1007/s11938-006-0016-5

Megacolon

Bowel obstruction

Mechanical or functional obstruction of the intestines

rectocele Descending perineum Rectal prolapse Impaired rectal sensitivity Megarectum Rectal hyposensitivity The main diagnostic tools are blood tests, X-rays

Bowel obstruction

Bowel_obstruction

Anismus

Failure to relax the pelvic floor muscles during defecation

stool). This mass may stretch the walls of the rectum and colon, causing megarectum and/or megacolon, respectively. Liquid stool may leak around a fecal impaction

Anismus

Fecal impaction

Solid buildup of feces in the rectum due to chronic constipation

Halligan SM, Bartram CI (April 1996). "The anal sphincter in idiopathic megarectum: effects of manual disimpaction under general anesthetic". Diseases of

Fecal impaction

Fecal_impaction

Prucalopride

Drug used to treat chronic constipation

such as Crohn's disease, and ulcerative colitis and toxic megacolon/megarectum. Prucalopride has been given orally to ~2700 patients with chronic constipation

Prucalopride

Obstructed defecation

Inability to fully empty the rectum during bowel movements

hyposensitivity that is secondary to abnormal rectal structure (e.g. megarectum) or rectal biomechanical properties (e.g. rectal hypercompliance). It

Obstructed defecation

Obstructed_defecation

Fecal incontinence

Inability to refrain from defecation

of rectal hyposensitivity and may lead to fecal loading or impaction, megarectum and overflow FI (see overflow incontinence). This may occur when there

Fecal incontinence

Fecal_incontinence

Rectal prolapse

Protrusion of the walls of the rectum outside the body

Narrowed internal lumen with associated rectal hyposensitivity or early megarectum Type 3: Internal-external recto-anal intussusception Patients may have

Rectal prolapse

Rectal_prolapse

Defecography

Visualisation of the mechanics of a patient's defecation

layer of rectal wall). This is most likely to be seen during straining. Megarectum: This is excessive width (>9 cm) of the rectum at the level of the distal

Defecography

Anorectal manometry

Medical functional test of the anus and rectum

likely due to Hirschsprung's disease and may indicate the presence of megarectum. Functional anorectal pain includes disorders such as levator ani syndrome

Anorectal manometry

Anorectal_manometry

Solitary rectal ulcer syndrome

Medical condition

or posterior (back) rectocele. Prolonged retention of contrast media. Megarectum. Endoanal ultrasound can determine the depth of the ulcer and the structure

Solitary rectal ulcer syndrome

Solitary_rectal_ulcer_syndrome