10 Need to Know Thyroid Cancer Facts

2. Malignant Thyroid Tumors

Malignant thyroid tumors originate in the thyroid cells. There are 2 distinct types of cells in the thyroid—follicular cells and parafollicular cells (or C cells).

When a tumor becomes malignant, or when it metastasizes, it means that the cancer can spread from the thyroid cells to other cells and areas of the body.

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Thyroid Disorders

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