background: thyroid carcinoma is the most common malignancy of the endocrine system. papillary thyroid carcinoma (ptc) is the most common type of thyroid cancer, accounting for 70–90% of well-differentiated thyroid malignancies. thyroid papillary microcarcinoma is a subtype of papillary carcinoma that included tumors with less than 10mm diameter. as a result of diagnostic methods improvement, p...