A thyroid biopsy is a procedure in which a small sample of tissue is removed from the thyroid gland and looked at under a microscope for cancer, infection or other thyroid problems. Results from a thyroid biopsy are usually available in a few days.
- Normal: The biopsy shows normal thyroid tissue.
- Abnormal: The biopsy sample shows thyroid disease (such as inflammation of the thyroid gland), thyroid cancer or a noncancerous (benign) tumor. A thyroid cyst is found at the time of a biopsy. Most cysts of the thyroid gland are not cancerous.
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