RESUMO
Objective:To summarize the case data of endometrial cancer (EC), analyze the related factors of lymph node metastasis, and establish the prediction model, so as to provide reference for clinical practice.Methods:191 patients with endometrial cancer who were diagnosed and treated in department of gynecology of Baoding Maternal and Child Health Hospital from January 2010 to December 2019 were selected as the research objects. The demographic and surgical pathological information of the patients were analyzed retrospectively. The risk factors of lymph node metastasis were analyzed by univariate and logistic regression analysis, and the predictive model was established.Results:A total of 191 patients with EC, aged 26-76(53.1±9.5)years old, body mass index (BMI)18.70-40.20(25.84±3.94)kg/m 2, 13 cases (6. 81%) had lymph node metastasis. Univariate analysis showed that lymph node metastasis was associated with obesity (BMI≥28 kg/m 2), pathological type (non endometrioid adenocarcinoma), degree of differentiation, depth of myometrial invasion (>1/2) and vascular invasion ( P<0.05). Logistic multivariate analysis showed that low differentiation ( OR=9.475, 95% CI: 1.840-48.799), vascular invasion ( OR=6.614, 95% CI: 1.457-30.024) and deep muscle invasion ( OR=4.997, 95% CI: 1.342-18.600) were independent risk factors ( P<0.05). The regression equation: Logit P=-4.488+ 1.609× myometrial infiltration depth+ 1.889×vascular infiltration+ 2.249×degree of tissue differentiation. The area under the receiver operating characteristic (ROC) curve (AUC) of EC lymph node metastasis probability P was 0.813 (95% CI: 0.688-0.938). The cut off value of 0.56 was ideal. At this time, the prediction sensitivity was 76.9% and the specificity was 79.2%. Conclusions:In clinical practice, gynecologists should consider the condition of EC patients and make operation plan to avoid over treatment or under treatment.