After extensive surgery, calcitonin levels plummet in most patients with medullary thyroid carcinoma (MTC) without lymph node metastases. Calcitonin, however, remains elevated in two-thirds of ...

Thyroid cancer is occasionally associated with hyperthyroidism. Papillary thyroid carcinoma is the most frequently reported histologic type followed by follicular thyroid carcinoma. Medullary ...