“…Thyroidectomy is recommended as the first-line treatment method for PTC [5,6]. However, for lowrisk patients (defined as having intrathyroidal PTC with no evidence of extrathyroidal extension, vascular invasion, or metastases) [3], the necessity of thyroidectomy has become a focus of controversy both in China and abroad [7,8]. Active surveillance for low-risk papillary thyroid microcarcinoma (PTMC) was mentioned in the 2015 American Thyroid Association guidelines (ATA, 2015).…”