Let's learn about a Parathyroid Scan in simple terms.

Were you a little scared when your doctor told you to have a 'Parathyroid Scan'? It's very normal for a lot of questions to come to mind, like "What kind of scan is this? Will it hurt? Why is this being done?" So today we'll talk about everything in a very simple way, in a way that you can understand. This is not as scary as you might think.

What exactly is a Parathyroid Scan?

Simply put, a Parathyroid Scan is a painless, safe test that looks at the parathyroid glands in our body. These four small glands located behind the thyroid gland in our neck can sometimes become overactive. Doctors use this scan to find out exactly which gland or glands are overactive. This usually involves an ultrasound scan or a nuclear scan.

Why do I need to have this scan?

If your blood test results show elevated calcium levels, your doctor may suspect that you have a condition called hyperparathyroidism. If he decides that the best treatment for this condition is surgery to remove the overactive gland, he will order this scan.

Imagine how much easier it would be to operate on a gland knowing exactly which gland is the problem, rather than having to grope around for it. The images from this scan are like a map for the surgeon. So he can operate quickly through a very small incision . Sometimes these glands can be located in places other than where they normally are (ectopic glands). In such cases, this scan can help to find out where those glands are.

What types of scans are there?

There are two main types of parathyroid scans. Your doctor will discuss with you which type is best for you.

Ultrasound scan

You've probably seen this before. An ultrasound scan uses high-frequency sound waves to create pictures of the organs inside the body. You're not exposed to any radiation. It's a very safe procedure. It's like looking inside the body without making an incision.

Nuclear scan

Don't be scared when you hear this name. This is also a very safe procedure. It is also called a `(sestamibi scan)` or `(MIBI)`. What happens here is that a very small, safe radioactive liquid `(radiotracer)` is injected into your vein. This liquid travels with the blood and is absorbed by the parathyroid glands.

Then a special camera takes pictures of your neck. That overactive glandBecause this fluid absorbs more, it appears brighter in the images than the others. Usually, during this scan, images are taken several times, and you can compare them.

Sometimes, doctors may recommend both types of scans (ultrasound and nuclear) to get the clearest picture.

How should I prepare for the scan?

This is very simple. Your doctor will give you some specific instructions. For example, things like whether you can eat or drink before the scan.

• You will need to remove any jewelry , such as necklaces and earrings, before the scan, as they may interfere with the images.
• If you are having a nuclear scan, you must tell your doctor if you are pregnant, may become pregnant, or are breastfeeding . This is very important.

What happens during the scan?

This process will vary slightly depending on the type of scan you are performing.

How to do an ultrasound scan

All you have to do is lie down on an examination table, with something like a pillow under your neck.

1. The technician will apply a small amount of gel to the skin of your neck. This will not harm your skin and will not stain your clothes.

2. Then a device that looks like a microphone (transducer) is slowly moved over the gel. This is how pictures of the parathyroid glands are taken.

3. It helps a lot to keep yourself still during this time to get clear pictures.

4. When the work is done, the gel is wiped off.

How to do a nuclear scan

In this case, you just have to lie down on a bed.

1. First, a doctor or nurse will inject a safe liquid (radiotracer) into a vein in your arm. There will be no pain other than a slight stinging sensation when the needle is inserted.

2. Then, a special camera takes pictures of your neck area while you lie down.

3. You will not experience any side effects after the scan. You can even drive home on your own.

How long does it take to know the results of the scan?

The images from the scan are carefully reviewed by a radiologist and a report is sent to your doctor and surgeon. The doctor will then call you and set up a time to discuss the results with you. This could take a few days or a week.

What does it mean if the results come back as 'abnormal'?

Don't worry. 'Abnormal' means that the scan found the problematic gland.

• In a `nuclear` scan, the areas where the radioactive liquid is rapidly absorbed are visible as ``hot spots.'' That tells the surgeon, ``This is the gland that needs to be removed.''
• If an ultrasound scan shows an enlarged parathyroid gland, it is an abnormal result.

Therefore, a parathyroid scan is a help to you, not something to be afraid of. If you have any questions about this, don't hold anything back and ask your doctor.