MKI67 and neoplasm: Compared with patients with Ki67 < 3% and those without nuclear atypia, patients with Ki67 ≥ 3% and those with nuclear atypia had significantly larger tumor volumes (PKi67 = 0.001 and Pnuclear atypia = 0.014), smaller cyst volumes (PKi67 = 0.005 and Pnuclear atypia = 0.038), and lower C/T ratios (PKi67 < 0.001 and Pnuclear atypia = 0.001) (Table 2).