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- W3194804099 abstract "Objectives: To examine the survival effect of adjuvant therapy in stage II-III endometrial cancer based on peritoneal cytology results. Methods: The Surveillance, Epidemiology, and End Results Program was retrospectively queried to examine 7,467 women with stage II-III endometrial cancer who underwent hysterectomy with available peritoneal cytology results from 2010-2016. Propensity score inverse probability of treatment weighting was used to assess the survival effect of malignant peritoneal cytology, and Cox proportional hazard regression model was fitted to assess the association between adjuvant therapy and all-cause mortality stratified by peritoneal cytology results. Results: Malignant peritoneal cytology was reported in 1,662 (22.3%) women, and was associated with non-endometrioid histology, higher tumor stage, and nodal metastasis in multivariable analysis (all, P<0.05). In a propensity score-weighted model, malignant peritoneal cytology was associated with increased all-cause mortality compared to negative peritoneal cytology (hazard ratio 1.35, 95% confidence interval 1.23-1.48, P<0.001). Adjuvant therapy types varied based on histology and peritoneal cytology results. In non-endometrioid histology, combination of chemotherapy and whole pelvic radiotherapy (WPRT) was associated with improved overall survival compared to chemotherapy or WPRT alone irrespective of peritoneal cytology results (all, P<0.05). Combination of chemotherapy and WPRT was also associated with improved overall survival in women with endometrioid histology and malignant peritoneal cytology (P=0.026). Women with endometrioid histology and negative peritoneal cytology represented the most common subpopulation (46.5%), and overall survival was similar regardless of which of the three adjuvant therapy modalities was used (P=0.319). Conclusions: Malignant peritoneal cytology is prevalent and prognostic in stage II-III endometrial cancer. This study found that the benefit of adjuvant therapy for women with stage II-III endometrial cancer differed depending on the status of peritoneal cytology. To examine the survival effect of adjuvant therapy in stage II-III endometrial cancer based on peritoneal cytology results. The Surveillance, Epidemiology, and End Results Program was retrospectively queried to examine 7,467 women with stage II-III endometrial cancer who underwent hysterectomy with available peritoneal cytology results from 2010-2016. Propensity score inverse probability of treatment weighting was used to assess the survival effect of malignant peritoneal cytology, and Cox proportional hazard regression model was fitted to assess the association between adjuvant therapy and all-cause mortality stratified by peritoneal cytology results. Malignant peritoneal cytology was reported in 1,662 (22.3%) women, and was associated with non-endometrioid histology, higher tumor stage, and nodal metastasis in multivariable analysis (all, P<0.05). In a propensity score-weighted model, malignant peritoneal cytology was associated with increased all-cause mortality compared to negative peritoneal cytology (hazard ratio 1.35, 95% confidence interval 1.23-1.48, P<0.001). Adjuvant therapy types varied based on histology and peritoneal cytology results. In non-endometrioid histology, combination of chemotherapy and whole pelvic radiotherapy (WPRT) was associated with improved overall survival compared to chemotherapy or WPRT alone irrespective of peritoneal cytology results (all, P<0.05). Combination of chemotherapy and WPRT was also associated with improved overall survival in women with endometrioid histology and malignant peritoneal cytology (P=0.026). Women with endometrioid histology and negative peritoneal cytology represented the most common subpopulation (46.5%), and overall survival was similar regardless of which of the three adjuvant therapy modalities was used (P=0.319). Malignant peritoneal cytology is prevalent and prognostic in stage II-III endometrial cancer. This study found that the benefit of adjuvant therapy for women with stage II-III endometrial cancer differed depending on the status of peritoneal cytology." @default.
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- W3194804099 date "2021-08-01" @default.
- W3194804099 modified "2023-10-16" @default.
- W3194804099 title "Survival effect of adjuvant therapy in stage II-III endometrial cancer: interaction to malignant peritoneal cytology" @default.
- W3194804099 doi "https://doi.org/10.1016/s0090-8258(21)01191-4" @default.
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