Abstract
Medullary Thyroid Carcinoma (MTC) is a neuroendocrine tumor originating from thyroid parafollicular cells, also called C cells, which secrete calcitonin. MTC accounts for 5% of thyroid cancers. Most cases of MTC are sporadic, and approximately 30% are associated with a hereditary syndrome called multiple endocrine neoplasia type 2 (MEN2A and MEN2B). In these syndromes, MTC is the most fre…