Özet:

Follicular lesion of undetermined significance (FLUS) is defined in the same Group III with the atypia of undetermined significance according to Bethesda Classification but these subgroups have different malignancy rates and tumor characteristics according to the studies. In this study, the aim was to evaluate the preoperative clinicopathologic features of the patients with cytological Bethesda Category III/FLUS thyroid nodules. The 44 patients were divided into two groups based on fine needle aspiration cytology (FNAC) results as benign (pB) and malignant (pM) and compared the preoperative clinical, ultrasonographic findings and FNAC results of two groups. According to the univariate analyses the presence of hiopechogenicity and presence of microcalcification are found to be significantly higher in malignancy (p<0.05 for all). Also, the presence of microcalcifications (p=0.048), and hypoechogenicity (p=0.014) were found to be independent risk factors for malignancy according to logistic regression analysis. In patients with FLUS, it should be remembered that the incidence of malignancy increases and treatment should be considered in the forefront of surgery instead of recurrent FNAC in the presence of hypoechogenicity and microcalcification in ultrasonography, and in patients with nuclear membrane irregularity according to FNAC.

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