BRAF and thyroid gland papillary carcinoma: The purpose of this study is to evaluate the correlation between the mutation of the BRAF V600E oncogene and the pathological standardized uptake values (SUV) at the PET/CT evaluation, for a group of patients with papillary thyroid cancer with persistent subclinical disease at 6 months after the initial radical treatment, consisting of surgery and radioiodine (I-131).