label: Stage IVB Thyroid Gland Medullary Carcinoma AJCC v7
label_lc: stage ivb thyroid gland medullary carcinoma ajcc v7
description: "Stage IVB includes: T4b, Any N, M0.  T4b: Very advanced disease.  Tumor invades prevertebral fascia or encases carotid artery or mediastinal vessels.  M0: No distant metastasis.  (AJCC 7th ed.)"