Definition of Tongue biopsy:

A tongue biopsy is surgery to remove a piece of the tongue for examination under a microscope.

How the test is performed:

A tongue biopsy can be done using a needle. After numbing the area, the health care provider gently sticks the needle into the tongue and removes a tiny piece of tissue.

Some types of tongue biopsies remove a thin slice of tissue. Others are done under general anesthesia (asleep and pain-free) so that larger areas may be removed and examined.

See also: Surgical excision

How to prepare for the test:

You may be told not to eat or drink anything for several hours before the test.

How the test will feel:

A needle biopsy is often somewhat uncomfortable even with use of an anesthetic, because the tongue is quite sensitive. After the biopsy, the tongue can be tender or sore, and it may feel slightly swollen. There may be stitches or an open sore where the biopsy was done.

Why the test is performed:

The test is done to determine the cause of abnormal growths or suspicious-looking areas of the tongue.

Normal Values:

There is normal tongue tissue, with no abnormal changes.

What abnormal results mean:

• Amyloidosis
• Tongue (oral) cancer

What the risks are:

• Bleeding
• Infection
• Swelling of the tongue (can obstruct the airway and cause breathing difficulty)

Note: Complications are rare.