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| - ts in the United States are 93% for papillary cancer, 85% for follicular cancer, 75% for medullary cancer, and 14% for undifferentiated/anaplastic cancer.[2] The thyroid gland may occasionally be the site of other primary tumors, including sarcomas, lymphomas, epidermoid carcinomas, and teratomas and may be the site of metastasis from other cancers, particularly of the lung, breast, and kidney.
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