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Abdominal wall fat pad biopsy

Contents of this page:

Illustrations

Digestive system
Digestive system
Fat tissue biopsy
Fat tissue biopsy

Alternative Names    Return to top

Abdominal wall biopsy; Biopsy - abdominal wall fat pad

Definition    Return to top

An abdominal wall fat pad biopsy is the removal of a small part of the abdominal wall fat pad. The procedure is done most often to test for amyloidosis.

How the Test is Performed    Return to top

Needle aspiration is the most common method of obtaining an abdominal wall fat pad biopsy. The skin of the abdomen is cleansed, and a local anesthetic may be used to numb the area. A needle is inserted through the skin and into the fat pad under the skin. A small core of the fat pad is removed with the needle and sent to the laboratory for analysis.

How to Prepare for the Test    Return to top

No special preparation is usually necessary.

How the Test Will Feel    Return to top

Although your health care provider may have numbed the skin, there can be some mild discomfort or pressure during the needle insertion. Afterward, the area may feel tender or bruised for several days.

Why the Test is Performed    Return to top

This test may be performed when amyloidosis is suspected.

Normal Results    Return to top

The fat pad tissues are normal.

What Abnormal Results Mean    Return to top

In the case of amyloidosis, abnormal results will indicate the presence of amyloid, an insoluble protein fiber that impairs organ and tissue function.

Risks    Return to top

The risks are minimal. There is a slight risk of infection. There is also a minor risk of bruising or slight bleeding.

References    Return to top

Buxbaum JN. The amyloidoses. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 296.

Update Date: 2/23/2009

Updated by: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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