MKI67 and neoplasm: The absence of changes in Ki67 levels was more prevalent in stage III (P = 0.005), NHG grade III (P < 0.001) tumors of intermediate tumor size (median, 16 mm [IQR, 8–30]; P < 0.001) and mean Ki67% around 62% (SD, 27%; P < 0.001) following treatment.