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If You Have a Thyroid Nodule Does it Mean Cancer?

Posted on December 4th, 2014 by dianeatwood | Catching Health Stories

Thyroid nodules don't always mean cancer

Lee with her granddaughter Ava

My friend Lee had a scare last year. She thought she might have thyroid cancer. It all began when she had a CT scan for something else and it showed a nodule or lump on her thyroid.

Then she had a fine needle aspiration biopsy, which came back suspicious for papillary cancer, the most common type of thyroid cancer.

Just because it was suspicious didn’t automatically mean she had cancer, but her odds were 60 to 70 percent. The next step was surgery to find out for sure.

Illustration of thyroid

Your thyroid is a butterfly-shaped organ in your neck, just below the voice box and above the collarbone. Its job is to produce hormones that regulate how the body uses and stores energy. Common problems are an overactive (hyper) or underactive (hypo) thyroid. Lumps on the thyroid are also pretty common.

In the United States, about 0.1 percent or 300,000 new nodules are detected every year. Supposedly, by the age of 60 about half of us have one that can either be felt or shows up on an imaging test like Lee had.

What causes thyroid nodules?

According to the Mayo Clinic, several conditions can cause nodules to develop in your thyroid:

  • Iodine deficiency Uncommon in the United States where iodine is routinely added to table salt and other foods.
  • Overgrowth of normal tissue Sometimes called a thyroid adenoma; usually serious only if large; some can lead to hyperthyroidism.
  • Cyst Fluid-filled and usually benign.
  • Chronic inflammation (thyroiditis) A disorder called Hashimoto’s disease, which causes an inflamed thyroid and is the most common cause of hypothyroidism, may increase the risk of nodules.
  • Multinodular goiter A goiter is simply an enlarged thyroid. If it contains several nodules, it’s called a multinodular goiter.
  • Thyroid cancer Uncommon

The odds of a thyroid nodule being cancer are about 5 percent, says Maine Medical Center endocrinologist, Dr. Daniel Oppenheim. As he points out, “That means 95 percent of the time a nodule is benign.”

Thyroid nodules are most common in:

  • Elderly people
  • Women
  • People with an iodine deficiency
  • People with a history of radiation exposure

An ultrasound of the thyroid is probably the best way to pick up and evaluate nodules, but it is not recommended as a routine screening exam. I asked Dr. Oppenheim why, if ultrasound was such an important tool, it wasn’t used for routine screening — like getting a mammogram. “The difficulty,” he said, “is thyroid nodules are very common and overwhelmingly benign. If you were to do an ultrasound on everybody, you would no doubt find lots of nodules that have no clinical meaning whatsoever.”

Instead, he says your health care provider should do a thorough exam of your thyroid and neck during your annual physical. An ultrasound should be ordered if a nodule is felt, you have symptoms or have risk factors.

Risk factors for thyroid cancer

  • History of radiation exposure to the head and neck
  • Family history of thyroid cancer
  • Age under 14 or over 70
  • Being a man
  • A diet low in iodine

Thyroid nodule symptoms 

Most thyroid nodules don’t cause any symptoms and are so small you don’t even know you have one. If it’s larger, you may:

  • Be able to feel it
  • Notice swelling in your neck
  • Feel as if something is in your throat
  • Have trouble swallowing
  • Have trouble breathing

Treatment for thyroid nodules

If a needle biopsy comes back negative for cancer or the nodule is too small to biopsy, the usual course of treatment is to follow it with regular ultrasound exams.

When a nodule is suspicious for cancer, it’s usually removed surgically, along with surrounding thyroid tissue. “And then,” says Dr. Oppenheim, “what is called a frozen section is done in the operating room — the pathologist is able to look under the microscope and get a sense of what the problem might be. Typically, if it’s clearly benign at the point, the surgeon will stop and that will be the end of the surgery. If the nodule is clearly thyroid cancer, the surgeon will remove the rest of the thyroid gland and usually some lymph nodes from the neck as well.”

Sometimes it isn’t possible to determine if a nodule is cancer right there in the operating room. That’s why it’s important to have a conversation with your surgeon ahead of time so you’re both on the same page about how to proceed. Would you want the surgeon to go ahead and take out your entire thyroid even though it might not have cancer or stop the surgery, knowing you might have to go back into the operating room if it turns out you do have cancer?

If the nodule is benign, even if only part of the thyroid is removed, it’s usually necessary to take thyroid medication because the gland won’t be able to produce the right amount of hormones anymore. “Missing half a thyroid or a whole thyroid really doesn’t make much difference in terms of subsequent treatment if the nodule is benign,” Dr. Oppenheim says.”Some people say, ‘Just take it out while you’re in there.’ Others say, ‘No, I really want to keep as much of my parts as I possibly can. I’m willing to take the risk of a second operation.'”

Thank goodness, Lee’s nodule was benign — no cancer. “It was the best news,” she says.

For a variety of reasons, her thyroid was totally removed. She will always be on medication, but says she’s grateful she won’t have to worry in the future.

What about cancer and other thyroid issues?

According to the American Cancer Society, “The chance of being diagnosed with thyroid cancer has risen in recent years and is now more than twice what it was in 1990.”

In a future post, I’ll take a look at why the rate of thyroid cancer has risen, as well as how it is detected and treated. I’ll also look at hypo- and hyperthyroidism.

For more information about the thyroid, visit the American Thyroid Association or let me know if you have any questions, and I’ll do my best to find you the answers.

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  1. Jaye Sewall says:

    Diane “Great article Diane. We are experiencing this in our family right now. Thanks for your timing!”

  2. I’m very happy that your friend Lee has a positive outcome. Thyroid cancer isn’t one that I see a lot written about, so this was informative. I am interested as to why the rate of thyroid cancer has risen so dramatically, so I ‘ll be looking for that next post

  3. Beth says:

    “I had the exact same thing with 2 inconclusive biopsies, they operated to take out my thyroid and did a biopsy on the table and it was benign so I still have my thyroid!”

  4. Maggie Patterson says:

    Thank you for sharing Lee’s story!

  5. Ken Dowell says:

    Hope your friend Lee is doing well. Must have been pretty scary. Think I’ll head down to the kitchen and make sure there is iodine in the salt I’m using.

    • dianeatwood says:

      When I read your comment Ted, I realized that I should add information about what causes benign nodules to my post. Lack of iodine is certainly one, but not so much in the United States, where too many food products are laced with salt and more salt (iodized)!

  6. Bridget says:

    My situation was the opposite. I was asymptomatic and went to an ENT for an unrelated ear problem. In the process of completing the exam, he found my thyroid was swollen on the Right side. An Ultrasound and Fine Needle Biopsy followed along with a second opinion. I was scheduled for a partial Thyroidectomy with a pathologist on the OR. They determined the Nodule was Papillary Cancer so the ENT took the entire Thyroid. The Nodule was less than 1 cm and my Thyroglobulin levels have come back undetectable twice now so I don’t need to do the Iodine treatment. Now I am adjusting to the replacement hormone. All this since January 2014 with the surgery being March 21. It’s been a crazy ride.

    • dianeatwood says:

      Bridget, thank you for sharing your story. It’s great news that it was caught so early, but even so, a lot of upheaval for you. I understand what that’s like. I hope next year will be less chaotic for you.

  7. Jen says:

    This hits home for me and my family. We have a family history of thyroid disease, I was diagnosed with an enlarged thyroid with nodules wrapping themselves around my windpipe after becoming pregnant with my first child. Had surgery to remove most of my thyroid, as well as a couple lymph nodes. Tests revealed papillary carcinoma in one nodule. It was caught early. I’d like to see you discuss the symptoms of hypothyroidism, hyperthyroidism and to please get the word out that the traditional TSH test is NOT effective in all treatment of thyroid disease nor is treatment with T4 only medication appropriate for every patient. and are excellent resources that I have used for many years to improve my health post-thyroid surgery.

    • dianeatwood says:

      Jen, thank you for the information and yes, I’ll write a separate post about other thyroid conditions, as well as testing. If you don’t mind, I might followup with you by email when I do.

  8. Jen says:

    Diane, that’s fine. I just don’t want others to go through the years of mismanagement that I went through. What works for one patient does not necessarily work for another. This is so true in my family and unfortunately it took me almost 10 years to figure that out. Ten years of experiencing almost every hypothyroid symptom there is even though my TSH level was within “normal” range. Contrary to what doctors will tell you this is not an easy disease to manage and treat and patients who are told by their doctors that if you’re going to have any cancer then thyroid cancer is the “good” cancer to have, I would have serious reservations about continuing with them. Two more sources that have gotten me through the rough years – and Thyroid patients need to be their own advocates and research, research, research!

    • Maureen Flaherty says:

      I am going through this right now. Had needle biopsy on 6 nodules…by Dr. Oppenheim. It was painful, but, he was just great doing it…if I can do it anyone can. I’m so glad you are doing this piece. Thyroid trouble is so misunderstood. It can be SO debilitating, yet, you look perfectly normal. I have found that just because you are in normal range…means nothing!!! The thyroid controls SO many things in our body. I hope this is talked about in the next article. Thanks so much for doing this!

      • dianeatwood says:

        Maureen, thank you for your comment. If you’re interested, I’d love to talk with you when I write the followup posts. I hope you’re doing ok.

  9. andleeb says:

    I hope your friend is feeling well. This is very informative post about thyroid. During my pregnancy my thyroid became low and I started taking medicine. Now I am fine from last 3 years.

    It is very sensitive matter and is cause of many more diseases and problems. I am very conscious about thyroid and always take iodized salt.

    • dianeatwood says:

      Anna, thank goodness your thyroid problem was discovered — if not, it could have harmed you and/or your baby. I’m glad you’re fine now and hopefully, you won’t have any more problems.

  10. Jeri says:

    It’s good to hear your friend is doing okay. This isn’t a cancer that gets much attention, so what a good idea to write such a post.

    • dianeatwood says:

      Thanks Jeri. Not only is it a cancer that doesn’t get a lot of attention, it’s on the rise — a topic for a future post.

  11. Barrett Reik says:

    Talking about thyroid disease, I was suffered from it for almost ten years! Doctor told me it can’t heal and only can be control with medication, but I am fully heal now by just using natural remedies… good job, pharmaceutical companies – for keeping us the patient a loyal customer.. but not me anymore. This is where I got my remedies

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