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Alternative Names Return to topAbdominal 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.