Hürthle cell tumors of the thyroid gland.

The recent controversy concerning the prognosis of Hürthle cell tumors instigated the review of our experience with 34 patients treated between 1972 and 1984. On the basis of strict histopathologic criteria, 14 patients with Hürthle cell hyperplasia, 10 with Hürthle cell adenoma, and 10 with Hürthle cell carcinoma were identified. There was a 40% incidence of bilateralism in Hürthle cell carcinoma, whereas we documented bilateral disease in only one of 10 patients with Hürthle cell adenoma. Lobectomies were performed in patients with tumors considered histopathologically benign and total thyroidectomy in patients with histologically malignant lesions as well as in most patients with a history of radiation exposure. Follow-up ranges from 4 months to 12 years (mean 3.1 years). To the present time there has been no evidence of recurrence and no deaths from Hürthle cell tumors. Consequently, in our experience, Hürthle cell tumors seem to behave in a rather benign manner. Therefore it seems that the appropriate treatment for Hürthle cell adenoma and nodular hyperplasia is a lobectomy. Total thyroidectomy is reserved for patients with Hürthle cell carcinoma primarily because of the high incidence of bilateralism.