MedlinePlus Medical Encyclopedia: Salivary gland biopsy

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Salivary gland biopsy

Contents of this page:
Illustrations Alternative names Definition How the test is performed How to prepare for the test	How the test will feel Why the test is performed Normal Values What abnormal results mean What the risks are

Illustrations

Salivary gland biopsy

Alternative names Return to top

Biopsy - salivary gland

Definition Return to top

Salivary gland biopsy is a diagnostic procedure in which a small piece of salivary gland is removed for examination.

How the test is performed Return to top

There are several pairs of salivary glands in different locations: a major pair in front of the ears (parotid glands); two major pair on the floor of the mouth; and several minor pairs within the lips, cheeks, and tongue.

One method of salivary gland biopsy is a needle biopsy. The skin over the gland is scrubbed. A local anesthetic may be injected, and a needle is inserted into the gland. A small "core" of gland tissue is removed with the needle and sent to the laboratory for analysis.

A biopsy can also be performed when all or part of a salivary gland is removed because of a tumor. An examination of the removed tissue can help to determine the type of tumor.

A lip biopsy can also be performed to diagnose diseases like Sjogren's syndrome.

How to prepare for the test Return to top

For a needle biopsy, there is no special preparation, although fasting for a few hours may be advised. For surgical excision of a tumor, preparation is like any major surgery, including fasting for 6 to 8 hours.

Infants and children:
The preparation you can provide for this procedure depends on your child's age, previous experiences, and level of trust. For specific information regarding how you can prepare your child, see the following:

Infant test or procedure preparation (birth to 1 year)
Toddler test or procedure preparation (1 to 3 years)
Preschooler test or procedure preparation (3 to 6 years)
Schoolage test or procedure preparation (6 to 12 years)
Adolescent test or procedure preparation (12 to 18 years)

How the test will feel Return to top

During a needle biopsy, there may be some stinging or burning if a local anesthetic is injected. Insertion of the biopsy needle may cause pressure or mild discomfort which should only last for 1 or 2 minutes. Afterward, the area may feel tender or be bruised for a few days.

Why the test is performed Return to top

This test may be performed to confirm the presence of Sjogren's syndrome, or to determine the cause of lumps or abnormal growths of the salivary glands.

Normal Values Return to top

There is normal salivary gland tissue anatomy with no abnormal growths or inclusions.

What abnormal results mean Return to top

Salivary gland tumors
Sjogren's syndrome

What the risks are Return to top

Bleeding
Infection
Injury to the facial or trigeminal nerve (rare)
Allergic reaction to the anesthetic

Update Date: 7/18/2003

Updated by: Jason Newman, M. D., Department of Otolaryngology, Kaiser Permanente Medical Group, Washington, DC. Review provided by VeriMed Healthcare Network.

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 2002 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.