Felis ISSN 2398-2950

Rectum: stricture

Contributor(s): Ed Hall, Cheryl Hedlund, Philip K Nicholls

Introduction

  • Decrease in size of rectal lumen either from cicatricial contracture or deposition of abnormal tissue extraluminally.
  • Cause: anorectal abscesses, accidental or surgical trauma, chronic proctitis, neoplasia.
  • Signs: various degrees of tenesmus, a thin ribbon-type stool, dyschezia, hematochezia, megacolon with constipation, and possibly fecal incontinence.
  • Diagnosis: clinical signs, rectal palpation (difficult in the cat) revealing a constricted area of the rectum that will not relax when the animal is under anesthesia.
  • Treatment: either dietary management and bougienage, dilatation or surgery.
  • Prognosis: recurrence possible; poor if neoplasia.

Pathogenesis

Etiology

  • May be related to anorectal abscesses, accidental or surgical trauma, chronic proctitis or neoplasia.

Pathophysiology

  • Any disease or trauma that evokes an inflammatory response in the anorectal region can cause scar tissue to form that is often a constricting ring of tissue.
  • Neoplasia (carcinoma) is rare but may cause a similar annular type stricture of the distal colon or rectum Large intestine: neoplasia.
  • Fecal incontinence may result if the inflammatory response and subsequent fibrosis incorporates the anal sphincter musculature or associated nerves.

Diagnosis

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Treatment

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Outcomes

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Further Reading

Publications

Refereed papers


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