MKI67 and cyst: The significant factors of tumor volume, cyst volume, and C/T ratio were included in the multivariate binary Logistic analysis, and the results showed that the C/T ratio was an independent predictor of Ki67 index (odds ratio = 0.010, 95% confidence interval (CI) = 0.000–0.462, P = 0.006) and nuclear atypia (odds ratio = 0.010, 95% CI = 0.000–0.250, P = 0.005) (Table 3).