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Anoscopy

Anal fissures - anoscopy; Anal polyps - anoscopy; Foreign object in the anus - anoscopy; Hemorrhoids - anoscopy; Anal warts - anoscopy

 

Anoscopy is a method to look at the:

  • Anus
  • Anal canal
  • Lower rectum

How the Test is Performed

 

The procedure is usually done in a doctor's office.

A digital rectal exam is done first. Then, a lubricated instrument called an anoscope is placed a few inches or centimeters into the rectum. You will feel some discomfort when this is done.

The anoscope has a light on the end, so your health care provider can see the entire area. A sample for biopsy can be taken, if needed.

 

How to Prepare for the Test

 

Often, there is no preparation needed. Or, you may receive a laxative, enema, or other preparation to empty your bowel. You should empty your bladder before the procedure.

 

How the Test will Feel

 

There will be some discomfort during the procedure. You may feel the need to have a bowel movement. You may feel a pinch when a biopsy is taken.

You can usually return to normal activities after the procedure.

 

Why the Test is Performed

 

This test may be used to determine whether you have:

  • Anal fissures
  • Anal polyps
  • Foreign object in the anus
  • Hemorrhoids
  • Infection
  • Inflammation
  • Tumors

 

Normal Results

 

The anal canal appears normal in size, color, and tone. There is no sign of:

  • Bleeding
  • Polyps
  • Hemorrhoids
  • Other abnormal tissue

 

What Abnormal Results Mean

 

Abnormal results may include:

  • Abscess
  • Fissures
  • Foreign object in the anus
  • Hemorrhoids
  • Infection
  • Inflammation
  • Polyps (non-cancerous or cancerous)
  • Tumors

 

Risks

 

There are few risks. If a biopsy is needed, there is a slight risk of bleeding and mild pain.

 

 

References

Nyberg SM. Anoscopy. In: Dehn RW, Asprey DP, eds. Essential Clinical Procedures. 3rd ed. Philadelphia, PA: Elsevier Saunders; 2013:chap 30.

 
  • Anal biopsy

    Anal biopsy - illustration

    Rectal biopsy can be used to determine the cause of blood, mucus, or pus in the stool. Rectal biopsy can also confirm findings of another test or x-rays, or take a biopsy of a growth found in the colon.

    Anal biopsy

    illustration

    • Anal biopsy

      Anal biopsy - illustration

      Rectal biopsy can be used to determine the cause of blood, mucus, or pus in the stool. Rectal biopsy can also confirm findings of another test or x-rays, or take a biopsy of a growth found in the colon.

      Anal biopsy

      illustration

    Tests for Anoscopy

     

     

    Review Date: 9/17/2016

    Reviewed By: Debra G. Wechter, MD, FACS, general surgery practice specializing in breast cancer, Virginia Mason Medical Center, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

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