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    Sigmoidoscopy (Anoscopy, Proctoscopy)

    Sigmoidoscopy (Anoscopy, Proctoscopy)



    What Affects the Test

    Reasons you may not be able to have the test or why the results may not be helpful include:

    • Stool in the colon or rectum.
    • The structure of the colon, such as a colon that has many turns.
    • A Reference barium enema Opens New Window done within a week before sigmoidoscopy.
    • You have peritonitis, diverticulitis, toxic megacolon, or you have had recent bowel surgery.


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