label: Stage IVB Thyroid Gland Medullary Carcinoma AJCC v8
label_lc: stage ivb thyroid gland medullary carcinoma ajcc v8
description: Stage IVB includes: T4b, Any N, M0. T4b: Very advanced disease; tumor of any size with extension towards the spine or into nearby large blood vessels, invading the prevertebral fascia, or encasing the carotid artery or mediastinal vessels. M0: No distant metastasis. (from AJCC 8th Ed.)