Incidence of Malignancy in Thyroid Nodules Determined to be Follicular Lesions of Undetermined Significance on Fine‐Needle Aspiration

Abstract

This study observed a 16.2% incidence of thyroid cancer in the nodule designated FLUS compared to the 5 to 15% rate reported by the Bethesda FNA classification. The overall incidence of incidental PTM in the thyroid gland was 21.3%. These data support considering surgical intervention for at least diagnostic purposes in a patient with the FNAB diagnosis of FLUS.