BRAF and thyroid nodule: As for the diagnostic indices of BRAF mutation analyses for the 200 thyroid nodules, BRAFV600E mutation analysis revealed 79 true positive, 2 false positive, 103 true negative, and 16 false negative cases; the sensitivity, specificity, positive and negative predictive values, and accuracy were 83.2%, 98.1%, 97.5%, 86.6%, and 91%, respectively.