How is rectal prolapse differentiated from intussusception?

Updated: Dec 20, 2018
  • Author: A Alfred Chahine, MD; Chief Editor: Carmen Cuffari, MD  more...
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Answer

In rare circumstances, intussusception presents with prolapse of the intussusceptum through the anus. Such prolapse can be confused with rectal prolapse. Careful examination can differentiate between the 2 presentations, as follows:

  • The anal crypts are everted with rectal prolapse and not with intussusception

  • An examining finger can be passed between the prolapse and the anus in patients with intussusception but not in patients with rectal prolapse


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