Skip navigation
MedlinePlus Trusted Health Information for You U.S. National Library of MedicineNational Institutes of Health
Contact Us FAQs Site Map About MedlinePlus
español Home Health Topics Drug Information Medical Encyclopedia Dictionary News Directories Other Resources

 

Medical Encyclopedia

Other encyclopedia topics:  A-Ag  Ah-Ap  Aq-Az  B-Bk  Bl-Bz  C-Cg  Ch-Co  Cp-Cz  D-Di  Dj-Dz  E-Ep  Eq-Ez  F  G  H-Hf  Hg-Hz  I-In  Io-Iz  J  K  L-Ln  Lo-Lz  M-Mf  Mg-Mz  N  O  P-Pl  Pm-Pz  Q  R  S-Sh  Si-Sp  Sq-Sz  T-Tn  To-Tz  U  V  W  X  Y  Z  0-9 

Anoscopy

Printer-friendly versionEmail this page to a friend
Contents of this page:

Illustrations

Anal biopsy
Anal biopsy

Definition    Return to top

An anoscopy is a procedure that enables a physician to view the anus, anal canal, and lower rectum using a speculum.

How the test is performed    Return to top

First, the health care provider performs a digital rectal exam by inserting a lubricated, gloved finger into the rectum to determine if anything will block the insertion of the scope.

He or she then inserts a lubricated metal or plastic anoscope a few inches into the rectum. This enlarges the rectum to allow the health care provider to view the entire anal canal using a light. A specimen for biopsy can be taken if needed. As the scope is slowly removed, the lining of the anal canal is carefully inspected.

How to prepare for the test    Return to top

You will be asked to defecate to clear your rectum of stool before the procedure. A laxative, enema, or other preparation may be administered to help clear your rectum.

Infants and children:
A child's age and previous experience determine which steps are appropriate to prepare a child for this procedure. For specific recommendations, refer to the following topics as they correspond to your child's age:

How the test will feel    Return to top

There will be some pressure during the procedure, and you may feel the need to defecate. If biopsies are taken, you may feel a pinch.

Why the test is performed    Return to top

This test may be used to determine whether you have hemorrhoids, anal polyps, tumors, inflammation, fissures, or infection.

Normal Values    Return to top

The anal canal appears normal in size, color, and tone. There is no evidence of bleeding, polyps, hemorrhoids, or other abnormal tissue.

What abnormal results mean    Return to top

Abnormal results may indicate hemorrhoids, an abscess, inflammation, infection, fissures, tumors, or polyps (benign or malignant).

What the risks are    Return to top

There are minimal risks for simple anoscopy. If a biopsy is needed, there is a limited risk of bleeding and mild pain.

Update Date: 12/30/2002

Updated by: Hebe Molmenti, M.D., Ph.D., Private Practice specializing in Plastic and Reconstructive Surgery, Baltimore, MD. Review provided by VeriMed Healthcare Network.

adam.com logo

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2002 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.