Ultrasonography of the breast; Sonogram of the breast; Breast lump - ultrasound
Breast ultrasound is a test that uses sound waves to examine the breasts.
How the Test is Performed
You will be asked to undress from the waist up. You will be given a gown to wear.
During the test, you will lie on your back on an examining table.
Your health care provider will place a gel on the skin of your breast. A handheld device, called a transducer, is moved over the breast area. You may be asked to raise your arms above your head and turn to the left or right.
The device sends sound waves to the breast tissue. The sound waves help create a picture that can be seen on a computer screen on the ultrasound machine.
The number of people involved in the test will be limited to protect your privacy.
How to Prepare for the Test
You may want to wear a two-piece outfit, so you do not have to completely undress.
A mammogram may be needed either before or after the exam. Do not use any lotion or powder on your breasts on the day of the exam. Do not use deodorant under your arms. Remove any jewelry from your neck and chest area.
How the Test will Feel
This test usually does not cause any discomfort, although the gel may feel cool.
Why the Test is Performed
Your provider may order this test if you have:
A breast ultrasound can:
A normal result means the breast tissue appears normal.
What Abnormal Results Mean
Ultrasound can help show noncancerous growths such as:
- Cysts, which are fluid-filled sacs
- Fibroadenomas, which are noncancerous solid growths
- Lipomas, which are noncancerous fatty lumps that can occur anywhere in the body, including the breasts
Breast cancers can also be seen with ultrasound.
Follow-up tests to determine whether treatment may be needed include:
There are no risks associated with breast ultrasound. There is no radiation exposure.
Allweis TM, Grubstein A, Menes T. Breast cancer screening. In: Klimberg VS, Gradishar WJ, Bland KI, Korourian S, White J, eds. Bland and Copeland's The Breast: Comprehensive Management of Benign and Malignant Diseases. 6th ed. Philadelphia, PA: Elsevier; 2024:chap 12.
Hacker NF, Friedlander ML. Breast disease: a gynecologic perspective. In: Hacker NF, Gambone JC, Hobel CJ, eds. Hacker and Moore's Essentials of Obstetrics and Gynecology. 6th ed. Philadelphia, PA: Elsevier; 2016:chap 30.
James JJ, Evans AJ. The breast. In: Adam A, Dixon AK, Gillard JH, Schaefer-Prokop CM, eds. Grainger & Allison's Diagnostic Radiology. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 63.
Phillips J, Mehta RJ, Stavros AT. The breast. In: Rumack CM, Levine D, eds. Diagnostic Ultrasound. 5th ed. Philadelphia, PA: Elsevier; 2018:chap 21.
Siu AL; US Preventive Services Task Force. Screening for breast cancer: US Preventive Services Task Force recommendation statement. Ann Intern Med. 2016;164(4):279-296. PMID: 26757170
Last reviewed on: 4/1/2023
Reviewed by: Debra G. Wechter, MD, FACS, General Surgery Practice Specializing in Breast Cancer, Virginia Mason Medical Center, Seattle, WA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.