Intraoperative Cytological Diagnosis of Oncocytic Thyroid Carcinoma. Case Report

Oncocytic tumors amount for about 5 % of thyroid cancer. Oncocytic differentiation of cells can be observed in various benign processes, as well as in various neoplasms of the thyroid gland (for example, in papillary, medullary carcinomas), which can cause a number of difficulties and predetermine the need for thorough differential diagnosis during cytological examination. The article presents a clinical and morphological features of the case of oncocytic thyroid carcinoma, demonstrating the difficulties of its diagnostics at the preoperative stage and the possibility of urgent intraoperative cytological diagnostics of this tumor, the results of which correlate with the conclusion of a subsequent histological examination.