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Thyroid Cancer Landscape Advancing to Include Novel Surgical Techniques

Gina Columbus @ginacolumbusonc
Published: Saturday, Dec 16, 2017

Michael Bouvet, MD
Michael Bouvet, MD
Surgical advancements, particularly nerve monitoring and parathyroid imaging, have played an important role in evolving the treatment for localized thyroid cancer. However, challenges still exist as to determining whether an individual patient’s tumor warrants surgical intervention or observation.

on Head and Neck Squamous Cell Carcinoma. Bouvet, professor of surgery at the University of California, San Diego, highlighted the evolving surgical options in the thyroid cancer field.

OncLive: What are the common symptoms and risk factors of thyroid cancer?

Bouvet: Thyroid cancer is increasing in frequency and it often presents in younger patients. Some of the patients are as young as 20 years old and the average age of diagnosis is about 40. Oftentimes, it will just be something that the patient discovers—a little lump in their throat—or it could be discovered by their primary care physician in the office who did a neck exam and they found a little lump in the neck. 

Having said that, we don’t know what causes most thyroid cancers. There are some people with a family history of thyroid cancer and, in that case, they can be at risk if they have a certain gene that they inherited. 

How has biology become an important prognostic factor for thyroid cancer?

That is what we are trying to figure out with thyroid cancer. There are different types of thyroid cancer. The most common is papillary thyroid cancer and, even within the papillary subset, you get some tumors that are sort of indolent and small. Some people even say we don’t need to treat them; we can just do observation if they are small.

On the other hand, if patients get papillary thyroid cancer that has spread into the lymph nodes, they sometimes cause a lot of local problems. Patients can get hoarseness if it’s invading the current laryngeal nerve; you can get pressure sensations in the neck if it spreads to local areas, so we are trying to figure out which patients are going to develop which type of thyroid cancer.

Then, there are more rare types, such as follicular thyroid cancer and medullary thyroid cancer, that have sort of unique biologic properties. It is a wide spectrum of types of cancers. Each patient has an individual course of treatment that they take. 

Is there any work that you’re involved with you would like to highlight?

I am a thyroid cancer surgeon, so every week I am operating on patients with thyroid cancer. One of the things that we are very cognizant of and are very careful of is to try to avoid complications when we do thyroid surgery. We are always evaluating new techniques. Nerve monitoring has been around for a while, but we would like to monitor the recurrent laryngeal nerves while we are doing the surgery so that we can avoid an injury to the nerves and, if they do get injured, patients can get hoarse. That is an important part of trying to prevent that complication. The nerve monitors have gotten better over time. 

The other [exciting] thing that we are doing has to do with one of the potential complications during thyroid surgery: damage to the parathyroid glands. There are 4 little small parathyroid glands, which sits behind the thyroid that controls calcium. During surgery, we want to leave those parathyroid glands in the neck to make sure they have a good blood supply and that they make enough parathyroid hormones so your calcium levels stay normal. 

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