Galofré, Juan C, Santamaría Sandi, Javier, Capdevila, Jaume, Navarro González, Elena, Zafón Llopis, Carles, Ramón Y Cajal Asensio, Teresa, Gómez Sáez, José Manuel, Jiménez-Fonseca, Paula, Riesco Eizaguirre, Garcilaso, GRANDE PULIDO, ENRIQUE. Consensus on the management of advanced medullary thyroid carcinoma on behalf of the Working Group of Thyroid Cancer of the Spanish Society of Endocrinology (SEEN) and the Spanish Task Force Group for Orphan and Infrequent Tumors (GETHI).