What is internal rectal prolapse (IRP)?

Updated: Nov 12, 2018
  • Author: Jaime Shalkow, MD, FACS; Chief Editor: Carmen Cuffari, MD  more...
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IRP refers to a full-thickness intussusception of the rectum during defecation. [42] Radiographically, different grades have been proposed, from low-grade (rectorectal intussusception) to high-grade (rectoanal intussusception) rectal prolapse. This kind of prolapse may lead to outlet obstruction and/or fecal incontinence. IRP plays an important role in the pathophysiology of obstructive defecation, which refers to the inability to empty the rectum satisfactorily during defecation.

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