Highlights ■ In multifocal papillary thyroid microcarcinomas: ■ The total tumor diameter was not associated with aggressiveness or initial evolution. ■ Other factors are associated with disease outcomes. ■ The number of metastatic lymph nodes is an independent predictor of American Joint Committee on Cancer stage. ABSTRACT Objective: To evaluate whether the total tumor diameter (sum of the largest diameters of all foci) predicts tumor aggressiveness at initial presentation and treatment response at 1-year follow-up in patients with multifocal papillary […]