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Doctor insights on: What Does A Malignant Thyroid Nodule Look Like On Ultrasound

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Less than 1cm hypoechoic thyroid nodule disappeared one month later.Dr said 1st ultrasound wasn't overread. How'd it disappear?

Less than 1cm hypoechoic thyroid nodule disappeared one month later.Dr said 1st ultrasound wasn't overread. How'd it disappear?

Thyroid nodule: Thyroid cysts can certainly come/go. The quality of ultrasounds, the interpretation, and the definition of a "nodule" can vary. Hashimoto's can cause a patchy pattern that can look like a nodule. Certainly a small nodule that is so transient is not something to worry about. An endocrinologist should be able to interpret things. ...Read more

Dr. Michael Gabor
2,239 doctors shared insights

Sonogram (Definition)

An ultraound, also known as a sonogram, is a painless and relatively inexpensive imaging test that utilizes sound waves instead of ionizing radiation. There are no side effects. Ultrasound can give us two-dimensional, and in some applications three-dimensional, images of structures and organs in virtually any part of the body. In addition to diagnostic uses, such as evaluating abnormalities in the abdomen, pelvis, and breast, ultrasounds are commonly used to guide needle and catheter placement in a variety of surgical ...Read more


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Why do I need another ultrasound after biopsy for thyroid nodule?

Why do I need another ultrasound after biopsy for thyroid nodule?

If it was inconclusi: If it wasn't a good sample, was inconclusive, or another biopsy needs to be done to obtain tissue for an afirma genetic assay. Ask your doctor. Biopsies cannot 100% prove the absence of cancer. ...Read more

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Why do I need another ultrasound after biopsy for thyroid nodule i had an ultrasound ten days ago?

Why do I need another ultrasound after biopsy for thyroid nodule i had an ultrasound ten days ago?

No: Not unless there has been a significant clinical change or another biopsy is required. Repeat biopsy will be necessary at intervals to evaluate progress and possible therapies. ...Read more

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4mm hypoechoic thyroid nodule disappeared by 1 year follow up ultrasound. They didn't see any nodule on the ultrasound. Is this normal?

4mm hypoechoic thyroid nodule disappeared by 1 year follow up ultrasound. They didn't see any nodule on the ultrasound. Is this normal?

Yes : It's better to regress than progress. The nodule was not very big to begin with, it may have been a cyst and went away. I would start to worry if it had grown. ...Read more

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New 7mm hypoechoic thyroid nodule found on ultrasound. I had a 4 mm hypoechoic nodule that disappeared a year ago. Why do I keep getting these?

Common: Thyroid nodules are quite common particularly in women. Unless you nodule is greater than 1 cm or associated with concerning ultrasound findings such as calcifications or abnormal bloodflow, it does not need to be biopsied. ...Read more

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7mm thyroid nodule seen on ultrasound, then 1 month later, it was gone. How can this be?

Options: The "nodule" could have been a cyst which involuted over time. Another option is that the first or second ultrasound was incorrectly read. A third option is the nodule may have gotten small enough to avoid being detected. ...Read more

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I was diagnosed to have a thyroid nodule and told to do an ultrasound after 6 months. Why?

I was diagnosed to have a thyroid nodule and told to do an ultrasound after 6 months. Why?

To be safe: The nodule is believed to have benign characteristics that do not require biopsy now. To be safe, and to ensure the nodule is not growing, a followup ultrasound is advised. This is very common and good advice. ...Read more

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How often do I need to schedule an Ultrasound for my Thyroid nodule? Each year? So far I've had two over two years, and it was small and benign

Yearly is sufficient: Yearly is sufficient. If the lesion remains stable in size, three years in a row, you may reduce the frequency in consultation with your doctor. ...Read more

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

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

It depends: 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. ...Read more

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I have a solid and cystic thyroid nodule (.9 x .7 x .5 cm). how long is normal to wait before a follow up ultrasound?

I have a  solid and cystic thyroid nodule (.9 x .7 x .5 cm). how long is normal to wait before a follow up ultrasound?

Thyroidologist: Your thyroidologist, endocrinologist, or thyroid surgeon is best qualified to answer this question. He or she ,who has examined and evaluated you, would sit down with the radiologist who interpreted your ultrasound and determine the best interval between your ultrasound and the next one and whether a needle biopsy is advisable at that time ...Read more

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I had a thyroid ultrasound done and it shows I have a new thyroid nodule that is 1.2cm. Previous one was 4mm now 6mm. Any concern?

Yes: Enlarging nodule needs clarification, by needle biopsy or excision likely. If clearly a cyst, may be followed, but thyroid blood chemical testing may lead to taking thyroid as a suppressant. Multinodular may be goiter. Nevertheless clarity is important and treatment can be guided. ...Read more

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I have a 5mm hypoechoic heterogeneous thyroid nodule, but it's causing me pain. Should I have another ultrasound sooner than 3 months?

I have a 5mm hypoechoic heterogeneous thyroid nodule, but it's causing me pain. Should I have another ultrasound sooner than 3 months?

No: It is unlikely that a 5 mm module is causing pain. Currently recommended practice is to follow up annually for less than 1 cm (or 1.5 cm) nodules. More than that size biopsy. ...Read more

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1.5mm (yes, tiny) thyroid nodule found on ultrasound. Not characterized in any way except "solid nodule". Possible to biopsy at this stage?

Nodule too tiny: Biopsy of a 1.5 mm thyroid nodule would be difficult. Most biopsies occur when nodules reach a size of 1.0 to 1.5 cm. You should have follow up ultrasound scan probably in 3 - 6 months. ...Read more

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My ultrasound showed thyroid nodules that are "interdeterminant" the report says with a follow up ultrasound needed in 1 year. What is that?

My ultrasound showed thyroid nodules that are "interdeterminant" the report says with a follow up ultrasound needed in 1 year. What is that?

"Indeterminate": is not a very specific conclusion, and without any further description or review of the images, it is difficult to speculate what is the basis for the follow up recommendation. Best bet is to talk to your doc about the results. ...Read more

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Found a thyroid nodule, via ultrasound in july, 2012 at 9mm; it was evaluated again yesterday at about 1.06cm. Fna recommended for this size?

Found a thyroid nodule, via ultrasound in july, 2012 at 9mm; it was evaluated again yesterday at about 1.06cm. Fna recommended for this size?

Probably not...: If the nodule is mostly cystic, FNA is not indicated. If the nodule is solid or mostly solid, FNA may be considered (depending on family history) even it is around 1 cm. ...Read more

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Malignant (Definition)

The term malignant can be used in several medical contexts, but is primarily used to describe cancers. More dangerous and disorderly than the benign growth of cells, malignant cells have developed genetic changes that can allow it to invade other tissues in an unregulated way. These tumors can later spread, or metastasize, to other parts of the body and ...Read more


Nodule (Definition)

Any growth or deposit in the body or on its surface may be casually termed a nodule until its character is determined by the familiarity of the physician with it or by the results of a biopsy if it is not so obvious. The term is casual ...Read more