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 Drugs & Supplements 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 

Biopsy

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

Alternative Names   

Tissue sampling

Definition    Return to top

A biopsy is the removal of a small piece of tissue for laboratory examination.

How the Test is Performed    Return to top

There are several different types of biopsies.

A needle (percutaneous) biopsy removes tissue using a hollow tube called a syringe. A needle is passed thru the syringe into the area of concern. The tissue is taken out using this needle. Needle biopsies are often performed using x-rays (usually CT scan), which guide the surgeon to the appropriate area.

An open biopsy is a surgery that uses general anesthesia. This means you are asleep and pain-free during the procedure. The procedure is done in a hospital operating room. A surgeon makes a cut into the affected area, and the tissue is removed.

Closed biopsy uses a much smaller surgical cut than open biopsy. The small cut is made so that a camera-like instrument can be inserted. This instrument can be used to see the area, and helps guide the surgeon to the appropriate place to take the sample.

How to Prepare for the Test    Return to top

Ask your health care provider if you need to stop taking any medications before surgery, particularly those that can make you bleed. Such medications include aspirin, Coumadin, and nonsteroidal anti-inflammatory medications (NSAIDs).

Also mention any herbal preparations you are taking. Never stop or change your medications without first talking to your health care provider

How the Test Will Feel    Return to top

In a needle biopsy, you will feel a small sharp pinch at the site of the biopsy. In an open or closed biopsy, local or general anesthesia is generally used to make the procedure pain free.

Why the Test is Performed    Return to top

A biopsy are most often done to examine tissue for disease. A biopsy may also be done to match organ tissue before a transplant.

Normal Results    Return to top

The tissue removed is normal.

What Abnormal Results Mean    Return to top

Abnormal biopsies mean that the tissue or cells have an unusual structure or condition.

This may mean you have a disease, such as cancer, but it depends on the individual biopsy.

Risks    Return to top

Considerations    Return to top

Please see the following list of tests or procedures to obtain more information on why each one is performed, how it is performed, the risks, and normal and abnormal results:

Update Date: 10/16/2006

Updated by: J.A. Lee, M.D., Division of Surgery, UCSF, San Francisco, CA. Review provided by VeriMed Healthcare Network.

A.D.A.M. 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 1997-2008, A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.