Predictive factors of lymph node metastasis and pattern of repartition in patients with epithelial ovarian cancer.

 To determine the rate, repartition and risk factors of lymph node (LN) metastasis in patients with epithelial ovarian cancer. We reviewed retrospectively the pathological and clinical data of 184 patients with epithelial ovarian cancer at a tertiary care center in Beirut, Lebanon. 88% of patients received a pelvic and para-aortic lymphadenectomy. 70% of patients presented LN metastases at both pelvic and para-aortic levels, while isolated pelvic or para-aortic LN metastases were seen in 16 and 14% of cases, respectively. In a univariate analysis, the rate of positive LNs was higher in patients with serous histology (65 vs 33%; p < 0.001), high-grade tumors (68 vs 26%; p < 0.001), bilateral adnexal involvement (74 vs 27%; p < 0.001), advanced clinical stage (p < 0.001), interval debulking surgery (63.2 vs 36.8%; p = 0.003) and positive peritoneal cytology (79 vs 26%; p < 0.001). In a multivariate analysis, the rate of LN involvement was significantly higher in patients with higher grade, advanced clinical stage and positive peritoneal cytology. Serous histology, grade 3 tumors, positive peritoneal cytology, advanced clinical stage, interval surgery and bilateral adnexal involvement can predict LN metastasis in patients with epithelial ovarian cancer.