Carcinoma of the thyroid gland is an uncommon cancer but is the most common malignancy of the endocrine system. Differentiated tumours (papillary or follicular) are highly treatable and usually curable. Poorly differentiated tumours (medullary or anaplastic) are much less common, are aggressive, metastasise early and have a much poorer prognosis.
This is a companion discussion topic for the original article at https://patient.info/doctor/endocrine-disorders/thyroid-cancer-pro