preferred_name: Stage IVB Thyroid Gland Undifferentiated (Anaplastic) Carcinoma AJCC v7
preferred_name_lc: stage ivb thyroid gland undifferentiated (anaplastic) carcinoma ajcc v7
label: Stage IVB Thyroid Gland Undifferentiated (Anaplastic) Carcinoma AJCC v7
label_lc: stage ivb thyroid gland undifferentiated (anaplastic) carcinoma ajcc v7