Fatih KUZU, Dilek ARPACI, Güldeniz KARADENİZ ÇAKMAK, Ali Uğur EMRE, Mustafa ÜNAL, Burak BAHADIR, MUAMMER BİLİCİ, Taner BAYRAKTAROĞLU

he value of blood cell markers in patients with thyroid nodules including atypia of undetermined significance/follicular lesion of undetermined significance cytology

Atypia of undetermined significance/follicular lesion of undetermined significance (AUS/FLUS) is a heterogeneous that cannot be definitively diagnosed as benign, malignancy-suspect, or malignant. This study was conducted to evaluate the ability of mean platelet volume (MPV) and neutrophil-to-lymphocyte ratio (NLR) to predict the malignant potential of nodules diagnosed as AUS/FLUS. We retrospectively analyzed 101 patients for whom thyroid fine needle aspiration biopsy (FNAB) analysis indicated AUS/FLUS and who underwent surgery between 2011 and 2015. Demographic, laboratory, and histopathological data were obtained from a database. The patients were categorized into two groups: malignant or benign and comparisons between groups were performed. Of the 101 patients, 26 (25.7%) had solitary nodules and 75 (74.3%) had multinodulary goiter. The malignancy rate was 33.7%, and there were no differences between the two groups in terms of age, gender and thyroid function tests. Median preoperative red cell distribution width (RDW) level was 13.4 in the benign group, while it was 14.4 in patients with malignancy, demonstrating a significant correlation. Both MPV and NLR were elevated in malignant nodules. The malignancy risk of AUS/FLUS evident upon thyroid FNAB was higher than anticipated by the Bethesda system (BS). MPV, NLR and RDW are useful for estimating the malignancy risks of these diseases.

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