MedlinePlus Medical Encyclopedia: Skin lesion aspiration

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Skin lesion aspiration

Contents of this page:
Illustrations Definition How the Test is Performed How to Prepare for the Test	How the Test Will Feel Why the Test is Performed What Abnormal Results Mean Risks

Illustrations

Skin lesion aspiration

Definition Return to top

Skin lesion aspiration is the withdrawal of fluid from a skin lesion (sore).

How the Test is Performed Return to top

A needle is inserted into a skin lesion or skin abscess, which may contain fluid or pus. The fluid may be examined under the microscope or placed in culture medium to observe for the growth of microorganisms.

How to Prepare for the Test Return to top

There is no special preparation for this test.

How the Test Will Feel Return to top

If the abscess is deep, a local anesthetic may be injected into the skin to numb the area. There will be a pricking sensation as the needle enters the skin. In many cases, the removal of fluid will decrease the pressure within the tense, irritated lesion and relieve the pain.

Why the Test is Performed Return to top

This test is used to help determine the cause of a fluid-filled skin lesion. It can be used to diagnose skin infections.

What Abnormal Results Mean Return to top

The results may indicate a bacterial or fungal skin infection.

Risks Return to top

There is a slight risk of bleeding, mild pain, or infection.

Update Date: 10/11/2006

Updated by: Kevin Berman, MD, PhD, Associate, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network.

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