A female asked:
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are thyroid nodules always thyroid cancer? i have a thyroid nodule and my levels of some thyroid hormone are low. my doctor wants to do more tests, but i dont really understand what he said. do i have cancer, or could it be something else?

2 doctor answers
Dr. Molly Carlson
18 years experience Endocrinology
Over : Over 95% of thyroid nodules are benign. Therefore the risk of cancer is low, but can be increased in younger or older people, people with a family history of thyroid cancer, or people who have been exposed to radiation (x-rays do not count). Sometimes benign thyroid nodules can secrete extra thyroid hormone, more than your body needs. If your doctor is suspicious of this, they will order a nuclear study called a thyroid uptake and scan. If a nodule is over a centimeter, that is when we usually will perform a fine needle aspiration to get a sample of cells in the nodule. If nodules are under a centimeter and there is no evidence of over activity, we can simply monitor with serial ultrasounds.
Answered on Nov 29, 2017
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Dr. Chad Levitt
21 years experience Radiation Oncology
No.: There are many things that can cause this most of which are benign. Bloodworm and an ultrasound and rarely a small biopsy can answer specifically what your cause is. Most are benign in nature.
Answered on May 5, 2013
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