Fine Needle Aspiration Biopsy of the Thyroid Gland

All fine needle aspiration biopsies of the thyroid gland performed at Providence Little Company of Mary Medical Center Torrance (PLCMMC-T) in 2012 were reviewed and classified using the Bethesda System. The frequency of diagnostic categories was compared to that found in the medical literature. Subsequent thyroidectomies were reviewed and correlated with the FNA diagnoses to assess accuracy. Diagnostic sensitivity and specificity for malignancy were 94.7% and 100% respectively. Performance was benchmarked against a large study published in Cancer.