Causes of Thyroid Cancer – Predisposing factors include; radiation exposure, prolonged thyroid stimulating hormone exposure, familial predisposition and chronic goiter.
Thyroid tumors are divided into papillary carcinomas, follicular carcinomas, medullary thyroid carcinomas (MTCs), anaplastic carcinomas, primary thyroid lymphomas, and primary thyroid sarcomas.
Papillary tumours account for half of all thyroid tumors in adults, it is most common in young adult females. Follicular carcinomas are less common but more likely to recur and metastasize to the regional nodes and through blood vessels into the bones, liver and lungs.
Medullary carcinoma is a rare familial cancer which is completely curable if detected before it causes symptoms. The least common type is anaplastic which has a very poor prognosis. Anaplastic thyroid cancer tends to be found after it has spread and is not cured in most cases
Thyroid cancer is an uncommon type of thyroid disease. The causes of thyroid cancer are not exactly known by doctors, but it starts with the rapid multiplication of cells in the thyroid gland. However, certain risk factors increase a persons chance of developing the cancer. When you are exposed to these risk factors, you are prone to developing thyroid cancer.
If a person ever had radiation treatment done on their neck or head, they should be aware that such treatments are causes of thyroid cancer.