*Statistical Analysis*

The study population was divided into two groups according to the presence or absence of EC at the histopathological examination of the uterus after hysterectomy. The two groups were compared for the variables collected to evaluate potential differences in preoperative features.

Continuous variables were expressed as mean ± standard error (SE), and categorical variables were expressed as *n* (%). Univariate analysis was performed for continuous variables with a two-tailed *t*-test for independent samples with unequal variances, and categorical variables with a Fisher's test after checking with the Kolmogorov–Smirnov test that the distribution of our samples did not differ from the normal one. A difference was considered statistically significant when it was associated with a two-tailed *p* < 0.05.

Statistical analyses were performed using SPSS 22.0 (Statistical Package for the Social Sciences) software (IBM Corp. Released 2013. IBM SPSS Statistics for Windows, Version 22.0. Armonk, NY, USA: IBM Corp.).
