Overview on surgical management of papillary thyroid microcarcinoma.

Particular interest is now being given to the best treatment of papillary thyroid microcarcinoma (PTMC) due to its significantly increased incidence. PTMC typically shows indolent organic behavior but, in a low percentage of cases, it can express a relative aggressive behavior. Several risk factors have been shown to negatively influence the rate of regional recurrences and metastases such as tumor diameter, Romaage, sex, multifocality, capsular invasion, extracellular diffusion, lymph node metastases, histological variants, mutated Braf and incidentality. The identification of patients with aggressive PTMCs among the majority with low risk lesions is very important to plan an adequate clinical management, thus the most appropriate surgical treatment. The latter includes thyroid lobectomy and total thyroidectomy with central compartment lymphadenectomy, though several studies did not show statistically significant differences in terms of recurrence and mortality rates between the two techniques. At last, it seems crucial to better define those biological features able to improve selection making process of patients with PTMCs aiming to reserve more radical surgery to those patients carrying more aggressive clinicopathologic features and worse prognosis.