Sage Otolaryngology

OTO: Rethinking Malignancy Risk in Indeterminate Thyroid Nodules with Positive Molecular Studies: Southern California Permanente Experience

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This podcast highlights original research published in the September 2019 issue of Otolaryngology–Head and Neck Surgery, the official journal of the American Academy of Otolaryngology—Head and Neck Surgery (AAO-HNS) Foundation. The objective of this study was to recognize that thyroid nodules with atypia of undetermined significance/follicular lesion of undetermined significance (AUS/FLUS; Bethesda III) have different risks of malignancy based on genetic mutation and to consider molecular testing of nodules with AUS/FLUS to help avoid unnecessary morbidity or cost. In conclusion, not all molecular mutations in thyroid nodules with AUS/FLUS have a high risk of malignancy. Of note, patients with BRAF and RET mutations in our population had a 100% risk of malignancy. Patients with PAX, HRAS, or NRAS mutations had a high risk of malignancy, while patients with KRAS mutations had a lower risk of malignancy. Further studies are needed to determine if the presence of certain molecular mutations can help personalize