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eISSN: 1643-3750

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Elevated CA-125 Level and ER-Negative as Prognostic Factors for Ovarian Metastasis in Patients with Endometrial Cancer: A Retrospective Cohort Study

Xiaoting Ling, Zheyu Zheng, Jing Xu, Guocai Xu, Hui Zhou, Zhongqiu Lin, Yangyang Li, Jinxiao Liang, Huaiwu Lu

(Department of Gynecology Oncology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China (mainland))

Med Sci Monit 2020; 26:e928826

DOI: 10.12659/MSM.928826


BACKGROUND: The utility of cancer antigen 125 (CA-125), estrogen receptor (ER), and progesterone receptor (PR) in evaluation for ovarian metastasis of endometrial cancer has yet to be determined. The purpose of this study was to investigate the incidence and the possible risk factors of ovarian metastasis.
MATERIAL AND METHODS: A retrospective study was performed in endometrial cancer patients who accepted surgical intervention of hysterectomy and oophorectomy during 2002-2013 in Sun Yat-sen Memorial Hospital, Sun Yat-sen University, China. Clinico-pathologic characteristics and the possible risk factors were investigated.
RESULTS: A total of 565 patients were identified, of which 5.7% had ovarian metastasis. Univariate analysis and multivariate analysis revealed that deeper myometrial invasion, tubal involvement, and parametrial involvement were independent risk factors. In subgroup analysis, univariate analysis showed that elevated CA-125 level and negative ER were associated with ovarian metastasis (P<0.05), however multivariate analysis revealed that only high CA-125 level was an independent risk factor (P<0.05). The incidence of ovarian metastasis in patients with high CA-125 level and who were ER-negative was 24%. For patients with normal CA-125 level and who were ER-positive, the incidence was 1.19%. The optimal cutoff value that provided the best sensitivity and specificity was 110.5 U/ml.
CONCLUSIONS: The incidence of ovarian metastasis in endometrial cancer is low. Ovarian preservation should be considered for women without abnormal CA-125 level and who have deeper myometrial invasion, tubal involvement, parametrial involvement, and who are ER-negative. These findings may facilitate clinical decision-making.

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