In FNAs with a histopathology diagnoses of PTC, FVPTC or PTC-TCV, 13/37 (35 %) were positive for the BRAF V600E mutation, and in surgical tissues with these same diagnoses, 7/12 (54 %) harbored this mutation (Additional file 5). This evidence concerns the gene BRAF and follicular variant thyroid gland papillary carcinoma.