label: Stage IVB Thyroid Gland Follicular Carcinoma AJCC v7
label_lc: stage ivb thyroid gland follicular 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.)