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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
2,190 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

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