Thyroid Cancer

The bulk of thyroid cancer is comprised of two types: papillary thyroid cancer (80% of cases) and follicular thyroid cancer (20% of cases). Both are classified as Well Differentiated Thyroid Cancer (WDTC).

Much more rare types include medullary and anaplastic cancer of the thyroid. In some cases, work-up of a thyroid mass will yield a convincing diagnosis of cancer.  According to the American Thyroid Association guidelines, WDTC measuring greater than 1 cm in size is best managed with total thyroidectomy.