The routine preoperative cytological evaluation of pathological changes of the thyroid more and more frequently reveals single or multiple Hürthl cells in the material obtained by the method of fine-needle aspiration biopsy (FNA). Hürthl cells are a degenerative form of epithelial follicular cells of the thyroid and cytological examination is insufficient for unequivocal differentiation between adenoma and carcinoma. Management of patients with FNA-diagnosed Hürthl cells arouses a number of controversies. Therefore, the authors of the present study subjected the thyroids of patients with cytologically diagnosed Hürthl cells to postoperative histopathological analysis. Appropriate surgical management was indicated.