can a benign thyroid nodule become cancerous

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Can benign thyroid nodule become malignant?

Well...

Cancer
A thyroid nodule is technically not "benign" unless it's surgically removed and the pathologist found no cancer in the specimen. A nodule that is still in your neck COULD still be cancerous despite a "benign" biopsy because not all of the nodule is cancerous. Sometime it's just a speck that is cancerous and was missed during the biopsy. That's why it's important to continue to follow the nodule.
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Might a benign thyroid nodule someday become a cancer?

Not 100%

Thyroid_nodules
If the nodule is still in your neck, there is no way to know that it is 100% benign. Even if you had a biopsy before and it came back benign, there is still a chance that the spot of cancer was missed during the first biopsy. This is why we don't "poo poo" it away after 1 biopsy but continue to follow the thyroid nodule to monitor for size changes. All said, the risk of cancer is very small.
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Dr. Kamran Janjua answered:

Could it happen such that a benign thyroid nodule turn into malignant years later?

Not likely

Thyroid_gland
Benign thyroid nodules almost always remain that way. The more likely instance is that a malignant nodule grew within the benign nodule (more likely when the benign nodule is large). These are usually examined on ultrasound and biopsies via fine needle aspiration or core biopsy. Read more about it here: http://www.conciergeradiologist.com/ultrasound-guided-biopsy.html
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Dr. David Sneid answered:

3cm hypoechoic solid vascular thyroid nodule with a cluster of hurthle cells, FNA benign, follow up ultrasound now shows microcalcifications. cancer?

Afirma

Fine_needle_aspiration
You need a repeat biopsy with an Afirma assay to screen more critically for possible malignancy. Surgery may be necessary if worrisome changes on ultrasound continue.
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Can a malignant thyroid nodule grow quickly?

Yes

Cancer
It depends on the type of thyroid cancer. Papillary, follcular, and medullary thyroid cancers are typically slow growing. Anaplastic thyroid cancer are very fast growing. Fortunately, this type of cancer is very rare.
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Dr. Marina Landa answered:

What to do if I have a calcified thyroid nodule.can it be thyroid cancer?

USG FNA

Nodule
At first, most probably you should have ultrasound guided fine needle aspiration after consultation with your physician. Calcifications can be seen in benign nodular Goiter. So, continue evaluation of your thyroid nodule, to rule out thyroid cancer, follow all tests what your physician ask you to do. Thanks for question. Stay well.
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Could I die from a malignant thyroid nodule?

Not the best questn

Thyroid_nodules
Your better question is what steps to you need to take to increase you chance of survival with this process.Close and honest discussions with your treatment team can provide you the best answers.
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unable to determine from a needle asp. if i have cancer in thyroid nodule. whats next step?

Options

Biopsy
You could rebiopsy. Maybe this time, also send out one tube for gene expression (molecular cytopath) to aid in the diagnosis. You could also go for surgery with biopsy taken while under anesthesia (frozen section) and proceed with total thyroidectomy if the intraoperative biopsy showed cancer. You could follow closely with ultrasound and rebiopsy if changes are seen with the nodule...
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Dr. Susan Wingo answered:

I'm a 39 year old male. A thyroid nodule was found during an ultrasound. % chance of cancer?

It depends

Thyroid
There are many factors which affect a given nodule's risk of being a thyroid cancer. These include size, and other features visible on US (Ultrasound) and patient age. Because women have many more being benign thyroid nodules than men, the risk for any one nodule is higher in a man. For a typical 1-2 centimeter (1/2-3/4 inch), that risk might be about 4% in a woman, or about 8% in a man.
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Is surgery the only way to treat a malignant thyroid nodule? Also how long would this operation take?

yes

Cancer
Surgery is the treatment for thyroid cancer. How long the surgery take depends on the experience of the sugeon and the extent of the disease
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