Hürthle-cell tumor arising in the mediastinal ectopic thyroid and diagnosed by fine needle aspiration. Light microscopic and ultrastructural features.

Abstract

The light microscopic and ultrastructural features of a Hürthle-cell tumor arising in the ectopic mediastinal ectopic thyroid and diagnosed by fine needle aspiration are presented. Although it lacked clear-cut cytologic features of malignancy, the tumor was clinically malignant, having metastasized to the lungs. Hürthle-cell tumors of the thyroid are… (More)

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