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  • Title: The prognostic effect of residual tumor for advanced epithelial ovarian cancer treated with neoadjuvant chemotherapy or primary debulking surgery.
    Author: Yang SP, Chen JX, Xu JY, Lei J, Wu SG, Zhou J.
    Journal: Cancer Med; 2022 Jul; 11(14):2836-2845. PubMed ID: 35274489.
    Abstract:
    PURPOSE: The role of neoadjuvant chemotherapy (NACT) and primary debulking surgery (PDS) in advanced epithelial ovarian cancer (EOC) remains controversial. This study aimed to investigate the prognosis between NACT and PDS in advanced EOC. We also investigated the prognostic effect of the residual tumor (RT) after NACT and PDS. METHODS: Patients with stage III-IV EOC diagnosed between 2010 and 2017 were included from the Surveillance, Epidemiology, and End Results (SEER) database. Chi-square test, multivariate logistic regression analysis, Kaplan-Meier curves, and Cox proportional hazards model were used for statistical analyses. RESULTS: A total of 5522 women patients were identified, 2017 (36.5%) and 3505 (63.5%) patients received NACT and PDS, respectively. There were 2971 (53.8%), 1637 (29.6%), and 914 (16.6%) patients who had no residual tumor, RT ≤1 cm, and RT >1 cm, respectively. There were 25.5% of patients receiving NACT in 2010 and 48.4% in 2017 (p < 0.001). Women treated with NACT were not related to a higher chance of complete resection than the PDS group (p = 0.098). Patients receiving PDS had significantly better cancer-specific survival (CSS) than those receiving NACT (p < 0.001). The 5-year CSS was 35.3% and 51.1% in those receiving NACT and PDS, respectively. In patients receiving NACT, those who had no residual tumor had significantly better CSS compared to those who had RT ≤1 cm (p < 0.001), while comparable CSS was found between those who had RT ≤1 cm and RT >1 cm (p = 0.442). In those receiving PDS, the CSS was decreased with a RT increase (p < 0.001). CONCLUSIONS: Our study suggests that PDS may be the optimal procedure for the majority of advanced EOC patients. Complete resection of all residual diseases should be the goal with the increased utilization of NACT.
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