Possibilities traditional and liquid-based cytology combined with immunocytochemical detection of some molecular markers in the preoperative diagnosis of well-differentiated thyroid cancer

Aim. To establish the diagnostic value of liquid and traditional cytological diagnosis with immunocytochemical (ICC) detection proteins (galectin-3, nucleophosmin, Ki-67) in the preoperative diagnosis of well-differentiated thyroid cancer and analysis of the effect of the autoimmune process in the thyroid gland in the diagnostic accuracy. Materials and methods. The traditional liquid-based cytology was performed on 107 samples and immunocytochemistry performed on 56 samples with histological findings: colloid goiter in 24 cases, 4 cases of Hashimoto’s thyroiditis, 4 cases of follicular adenoma, 22 cases of papillary cancer. Results. The results of a comparison of cytological and histological findings. The results of studies of diagnostic accuracy expression of galectin-3, nucleophosmin, Ki-67 for the diagnosis of thyroid cancer. A formula was developed to help determine the presence of malignancy in thyroid with high accuracy. Conclusion. The diagnostic accuracy of the method of liquid-based cytology is higher than the traditional method of cytology. ICC expression of Ki-67 method has 81.8% of sensitivity and 100% of specificity for the preoperative diagnosis of thyroid cancer. Conjoint definition HS Ki-67 and liquid-based cytology increases the sensitivity and specificity of the diagnosis of well-differentiated thyroid cancer preoperative to 100%. There no detected relations between the expression of galectin-3, NFM, Ki-67 and the presence an autoimmune process in the thyroid