The results help determine whether its acyst, an infection, a benign tumor, or cancer.

FNA is usually chosen when a lump is likely a fluid-filled cyst.

This photo contains content that some people may find graphic or disturbing.

An illustration with what to expect during a fine needle aspiration

Illustration by Ellen Lindner for Verywell Health

The other is that, in some cases, its possible to make a diagnosis the same day.

Risks and Contraindications

Risks with FNA are minimal.

you’re free to expect results within two to three days of the test, possibly sooner.

Ifultrasoundguidance is needed, the biopsy is usually done in a radiology department.

Food and Drink

Youre able to eat and drink normally before the procedure.

Ask your healthcare provider whether you should stop taking any medicines before the procedure, such as blood thinners.

Pre-Test

Youll undress from the waist up and wear a robe that opens in the front.

Youll be awake during the procedure and positioned on your back.

Your skin will be swabbed with an antiseptic solution to prevent infection.

Throughout the Test

Your healthcare provider will locate the lump by feeling it or by usingultrasoundto see it.

If no fluid comes out, the healthcare provider may reposition the needle and hit it one more time.

Test results can take up to two or three days, though sometimes theyre available the same day.

Fine needle aspiration may result in draining a cyst, causing the lump to go away.

This is a good indication that the lump was not cancerous.

However, some cysts do refill and, if they become bothersome, can be surgically removed.

The pathology report will help you and your healthcare provider talk about the next steps, if any.

But a fine needle aspiration is minimally invasive and can provide valuable information about your lump.

It is a short procedure with few side effects which can be done fairly easily.

A Word From Verywell

Undergoing, waiting for, and receiving test results can be anxiety provoking.

Frequently Asked Questions

No.

Fine needle aspiration can be used anywhere on the body.

It is most commonly used on the breast, the thyroid, suspicious lymph nodes, or skin masses.

Yes, it is a jot down of biopsy.

In a biopsy, cells, fluid, or tissue is removed and examined.

In FNA, the fluid and cells are removed via the needle and subsequently examined.

This can be helpful to remember if you are feeling anxious.

Casaubon JT.Fine needle aspiration of breast masses.

American Cancer Society.Fibrocystic changes in the breast.

National Breast Cancer Foundation.Breast biopsy.

American Cancer Society.Fine needle aspiration (FNA) biopsy of the breast.

Bitler MP, Carpenter CS.Health insurance mandates, mammography, and breast cancer diagnoses.Am Econ J Econ Policy.

2018;17(4):59-62. doi:10.9790/0853-1704085962

American Cancer Society.Core needle biopsy of the breast.

American Cancer Society.Surgical breast biopsy.

2018;19(3):853858. doi:10.22034/APJCP.2018.19.3.853

InformedHealth.org.Metastatic breast cancer: overview.

MedlinePlus.Breast biopsy - ultrasound.