Salivary gland biopsy is the removal of cells or a piece of tissue from a salivary gland for exam.
Biopsy - salivary gland
How the Test is Performed
You have several pairs of salivary glands that drain into your mouth:
- A major pair in front of the ears (parotid glands)
- Another major pair beneath your jaw (submandibular glands)
- Two major pairs on the floor of the mouth (sublingual glands)
- Hundreds to thousands of minor salivary glands in the lips, cheeks, and tongue
One type of salivary gland biopsy is a needle
- The skin or mucous membrane over the gland is cleaned with rubbing alcohol.
- A local pain-killing medicine (anesthetic) may be injected, and a needle is inserted into the gland.
- A piece of tissue or cells are removed and placed on slides.
- The samples are sent to the lab to be examined.
A biopsy can also be done to:
- Determine the type of
tumorin a salivary gland lump.
- Determine if the gland and tumor need to be removed.
An open surgical biopsy of the glands in the lips or the parotid gland can also be performed to diagnose diseases such as
How to Prepare for the Test
There is no special preparation for a needle biopsy. However, you may be asked not to drink or eat anything for a few hours before the test.
How the Test will Feel
With a needle biopsy, you may feel some stinging or burning if a local numbing medicine is injected.
You may feel pressure or mild discomfort when the needle is inserted. This should only last for 1 or 2 minutes.
The area may feel tender or be bruised for a few days after the biopsy.
The biopsy for Sjogren syndrome requires an injection of the anesthetic in the lip or in the front of the ear. You will have stitches where the tissue sample was removed.
Why the Test is Performed
This test is done to find the cause of abnormal lumps or growths of the salivary glands. It is also done to diagnose Sjogren syndrome.
The salivary gland tissue is normal.
What Abnormal Results Mean
Abnormal results may indicate:
Salivary gland tumorsor infection
- Sjogren syndrome or other forms of gland inflammation
Risks from this procedure include:
Allergic reactionto the anesthetic
- Injury to the facial or trigeminal nerve (rare)
- Numbness of the lip
Miloro M, Kolokythas A. Diagnosis and management of salivary gland disorders. In: Hupp JR, Ellis E, Tucker MR, eds. Contemporary Oral and Maxillofacial Surgery. 7th ed. Philadelphia, PA: Elsevier; 2019:chap 21.
Miller-Thomas M. Diagnostic imaging and fine-needle aspiration of the salivary glands. In: Flint PW, Haughey BH, Lund V, et al, eds. Cummings Otolaryngology: Head & Neck Surgery. 6th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 84.
Review Date: 27/02/2019
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 ©2019 A.D.A.M., Inc., as modified by University of California San Francisco. Any duplication or distribution of the information contained herein is strictly prohibited.
Information developed by A.D.A.M., Inc. regarding tests and test results may not directly correspond with information provided by UCSF Health. Please discuss with your doctor any questions or concerns you may have.