Needle Biopsy of the Adrenal Gland: About This Test

What is it?

A needle biopsy of the adrenal gland is a procedure to take a tiny sample of your adrenal gland tissue. It may be done as a fine-needle aspiration biopsy or as a core needle biopsy. The tissue sample will be checked under a microscope for cancer or other problems.

Why is this test done?

A needle biopsy of the adrenal gland may be done when certain blood tests are abnormal. It also may be done when an ultrasound, a CT scan, or an MRI shows a problem with the adrenal gland.

How do you prepare for the test?

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  Tell your doctor ALL the medicines, vitamins, supplements, and herbal remedies you take. Some may increase the risk of problems during your test. Your doctor will tell you if you should stop taking any of them before the test and how soon to do it.
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  If you take aspirin or some other blood thinner, ask your doctor if you should stop taking it before your test. Make sure that you understand exactly what your doctor wants you to do. These medicines increase the risk of bleeding.
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  Arrange for someone to drive you home after the test, because you may be given a sedative to help you relax.
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  Follow the instructions exactly about when to stop eating and drinking. If you don't, your procedure may be canceled. If your doctor told you to take your medicines on the day of the procedure, take them with only a sip of water.

How is the test done?

• You will need to take off all or most of your clothes. You will be given a cloth or paper gown to use during the test.
• You may be given a sedative through a vein (I.V.) in your arm. The sedative will help you relax and stay still.
• You may be asked to lie on your stomach or your side. The area where the biopsy needle will go in will be numbed.
• Your doctor will use ultrasound or a CT scan to help guide the biopsy needle into your back and to your adrenal gland. You may be asked to hold your breath.
• Your doctor will use the needle to take a small sample of tissue from your adrenal gland. Then the doctor will remove the needle.
• Pressure will be applied to stop the bleeding. A bandage will be put on the puncture site.
• You will be watched for 1 to 4 hours after the biopsy while the sedative wears off. You will be checked for any signs of internal bleeding or trouble breathing.

How long does the test take?

The biopsy takes 20 to 60 minutes. It also takes time to prepare before the biopsy. And you can expect to be monitored after the biopsy for a few hours or more.

When should you call for help?

Call 911 anytime you think you may need emergency care. For example, call if:

• You passed out (lost consciousness).
• You have severe trouble breathing.
• You have severe pain in your belly or chest.

Call your doctor now or seek immediate medical care if:

• You have new or worse belly pain, swelling, or bloating.
• Bright red blood has soaked through the bandage over the puncture site.
• You are sick to your stomach or cannot keep fluids down.
• You are dizzy or lightheaded, or you feel like you may faint.
• You have signs of infection, such as:
  • Increased pain, swelling, warmth, or redness.
  • Red streaks leading from the puncture site.
  • Pus draining from the puncture site.
  • A fever.

Watch closely for changes in your health, and be sure to contact your doctor if you have any problems.