Skull base metastasis from follicular thyroid carcinoma -two case reports-.

A 58-year-old woman and a 71-year-old woman presented with extremely rare skull base metastases from follicular thyroid carcinoma (FTC). Surgical removal and external radiotherapy were performed followed by iodine-131 ((131)I) brachytherapy and thyroid hormone administration. The metastatic tumors in the skull base were well controlled.