The higher frequencies were observed for oncocytic changes in tumor cells (OR = 4.820, p < 0.001), multifocal growth (OR = 2.539, p < 0.001), higher Ki67 LI (b = 1.747, p < 0.001) due to more frequent Ki67 LI from 5 to 10% (OR = 2.553, p < 0.001), while the frequency of fully encapsulated PTCs was lower (OR = 0.297, p = 0.014) (Table 1). This evidence concerns the gene MKI67 and neoplasm.