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Various approaches are available for the management of nodules that are evaluated to be indeterminate according to the results of thyroid fine needle aspiration biopsy. The present study aimed to determine the rate of malignancy and the ultrasonographic features that could be used as predictor of malignant pathologies at the nodules with indeterminate cytology. A total of 201 patients who underwent total thyroidectomy and whose fine needle aspiration biopsy results were evaluated to be Hurthle cell lesion (n = 99), follicular neoplasm (n = 61) and suspicious for malignancy (n = 41) were enrolled in this study. Of these patients, 178 were females (88.6 %) and 23 were males (11.4 %). The rates of malignancy were found to be 33.3 % in the Hurthle cell lesion group, 23.0 % in the follicular neoplasm group and 53.7 % in the suspicious for malignancy group (p = 0.006). The comparison of the ultrasonographic characteristics of the malignant and benign nodules revealed hypoechogenicity and microcalcification to be more common in malignant nodules (34.3 vs. 16.9 %, p = 0.005; 27.1 vs. 13.1 %, p = 0.014; respectively). While 92.3 % of the malignant nodules were C1 cm, 82.9 % of the benign nodules were C1 cm (p = 0.042). We believe that as the patients at Hurthle cell lesion group have higher risk of malignancy than the patients with Follicular Neoplasia so total thyroidectomy will be suitable for these patients. In addition, microcalcification and hypoechoic nodules at patients with indeterminate cytology can be related with increased risk of malignancy. The departmental affiliation of the authors from the Ministry of Health, Ankara Numune Research and Training Hospital, Turkey should read ‘‘Department of Endocrinology and Metabolism.’’ The online version of the original article can be found under doi: 10.1007/s12020-013-9922-1. Y. Tutuncu (&) D. Berker S. Isik G. Akbaba U. Ozuguz F. K. Kucukler E. Göcmen Y. Yalcın S. Guler Department of Endocrinology and Metabolism, Ministry of Health, Ankara Numune Research and Training Hospital, Ankara, Turkey e-mail: kardelendr@yahoo.com D. Berker e-mail: dberker6@yahoo.com S. Isik e-mail: isik_serhat@yahoo.com G. Akbaba e-mail: gulhanakcil@yahoo.com.tr U. Ozuguz e-mail: uozoguz@yahoo.com.tr F. K. Kucukler e-mail: kkucukler@yahoo.com S. Guler e-mail: sgulers@yahoo.com Y. Aydin Department of Endocrinology and Metabolism, Düzce University Medical School, Düzce, Turkey 123 Endocrine (2014) 45:160 DOI 10.1007/s12020-013-9956-4

endocrine

Erratum to: The frequency of malignancy and the relationship between malignancy and ultrasonographic features of thyroid nodules with indeterminate cytology