Thyroid and Parathyroid Surgery at GBMC diagnosis and treats the full range of thyroid and parathyroid diseases. Learn more about thyroid gland anatomy, hyperparathyroidism, benign thyroid disease (thyroid nodules, thyroid goiter, Grave's Disease, Hashimoto's Thyroiditis), thyroid cancers and surgical procedures. Differentiated thyroid cancers are the most common and have the best cure rate and prognosis. Medullary thyroid cancers are less common and have an intermediate prognosis. Anaplastic and poorly differentiated thyroid cancers are the most rare and very aggressive with a poor prognosis. Surgical procedures include thyroid lobectomy, total thyroidectomy, neck dissection and parathyroidectomy.