What are the types of thyroid cancer?

Papillary thyroid cancer is the most common type of thyroid cancer (70% to 80% of thyroid cancers) and can occur at any age.

Follicular thyroid cancer (10% to 15% of thyroid cancers) tends to occur in somewhat older patients than papillary cancer.

Medullary thyroid cancer (5% to 10% of thyroid cancers) is more likely to run in families and may be diagnosed by genetic testing.

Anaplastic thyroid cancer (less than 5% of thyroid cancers) is the least likely to respond to treatment.