Stage IVB Thyroid Gland Follicular Carcinoma AJCC v7

**Semantic type:** Neoplastic Process

**Definition:** 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.)

**Synonyms:** - Stage IVB Thyroid Gland Follicular Cancer - Stage IVB Thyroid Gland Follicular Carcinoma