Abstract
The mechanisms and clinical significance of lymph node involvement in ovarian cancer have been revealed since the International Federation of Gynaecology and Obstetrics (FIGO) introduced a new clinical staging including retroperitoneal lymph node status. The multiple directions of the lymph drainage pathway in ovarian cancer have been recognized. The incidence and pattern of lymph node involvement depends on the extent of disease progression and the histological type. Thus, it is difficult to specify a single node as the sentinel node. As a surgical approach, systemic lymphadenectomy is necessary to obtain accurate clinical stage, and it has obvious diagnostic value. Nevertheless, a recent large randomized trial in patients with advanced ovarian cancer revealed that systemic lymphadenectomy had no impact on survival compared with removing only macroscopic lymph nodes. Other factors, such as chemosensitivity, histological grade, and the size of residuals have also influenced survival in ovarian cancer. From the viewpoint of adverse effects and survival benefit, the efficacy of lymphadenectomy remains controversial. Therefore, further accumulation of clinical data is needed to establish the indications for lymph node dissection; when this procedure is done, it should be performed by experienced gynecologic oncologists at selected institutions.
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