[Surgery for advanced stage ovarian cancer: Article drafted from the French Guidelines in oncology entitled "Initial management of patients with epithelial ovarian cancer" developed by FRANCOGYN, CNGOF, SFOG, GINECO-ARCAGY under the aegis of CNGOF and endorsed by INCa].

Debulking surgery is the key step of advanced stage ovarian cancer treatment with chemotherapy. The quality of surgical resection is the main prognosis factor, thus a complete resection must be achieved (grade A) in an expert center (grade B). Surgery for stage IV is possible and has a benefit in case of complete peritoneal resection (LoE3). Pelvic and aortic lymphadenectomies are recommended in case of clinical or radiological suspicious lymph nodes (grade B). In absence of clinical or radiological suspicious lymph nodes and in case of complete peritoneal resection during initial debulking surgery, lymphadenectomy can be omitted because it won't change nor medical treatment nor overall survival (grade B). Neoadjuvant chemotherapy can be proposed in case of: impossibility to perform initial complete surgical resection (grade B) ; alteration of general state or co-morbidities or elderly patient (in order to decrease morbidity and increase quality of life) (grade B); stage IV with multiple intra-hepatic or pulmonary metastasis or important ascites with miliary (grade B). In case of stage III or IV ovarian cancer diagnosed on a biopsy during prior laparotomy, a neoadjuvant chemotherapy and interval debulking surgery should be preferred (gradeC). In case of palliative surgery or peroperative impossibility to perform a complete resection, no data regarding the type of surgery to perform influencing survival or quality of life is available. Peritoneal carcinosis description before resection and residual disease at the end of the surgery should be reported (size, location and reason of non-extirpability) (grade B). A score of peritoneal carcinosis such as Peritoneal Carcinosis Index (PCI) should be used in order to objectively evaluate the tumoral burden (gradeC). A standardized operative report is recommended (gradeC).

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