Wang J, et al. - Researchers analyzed retrospectively collected data from the Surveillance, Epidemiology, and End Results, to compare the survival influence of several lymph node staging methods and therapeutic role of lymphadenectomy in patients with epithelial ovarian cancer who had undergone lymphadenectomy. According to findings, 16 to 30 resected lymph nodes (RLNs) were recommended for stage I disease. They observed the more lymph node excision, the better the prognosis in stages II and III patients. For stage IV patients, lymphadenectomy was nonessential. For prognosis assessment for stages II and III patients, three-category classification of log odds of positive lymph nodes (LODDS) was recommended taking into account staging methods. Three-category classification of positive lymph node ratio (LNR) was idoneous for stage I and IV.