PERSISTENT THYROID CARCINOMA*

Abstract
Data regarding 17 cases of thyroid carcinoma persistent for ten to twenty-six years are reported. The ages of the patients at the time of the initial treatment varied from 8 to 56 years, and the tumors included all types of thyroid cancer. Only 1 tumor became histologically more anaplastic with persistence; all others were histologically similar at both the original and final examinations. Radical neck dissection as an initial therapeutic procedure was performed on only 3 patients. Although recurrences were limited to the neck in most instances, tumors of each histologic type showed a capacity for more distant metastases. Five of the 17 patients died as a result of persistent thyroid carcinoma.

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