Can CA-125 predict lymph node metastasis in epithelial ovarian cancers in Turkish population?
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Updated: Apr 30, 2026

Quantitation of Intra-peritoneal Ovarian Cancer Metastasis
Published on: July 18, 2016
Sinem Sudolmuş1, Nadiye Köroğlu1, Gökhan Yıldırım2
1Bezmialem Vakıf Üniversitesi, Adnan Menderes Bulvarı (Vatan Caddesi), Fatih, 34093 Istanbul, Turkey.
Objective:
The role of single preoperative serum CA-125 levels in predicting pelvic or paraaortic lymph node metastasis in patients operated for epithelial ovarian cancer has been investigated.
Methods:
176 patients diagnosed with epithelial ovarian carcinoma after staging laparotomy between January 2002 and May 2010 were evaluated retrospectively.
Results:
The mean, geometric mean, and median of preoperative serum CA-125 levels were 632,6, 200,29, and 191,5 U/mL, respectively. The cut-off value predicting lymph node metastases in the ROC curve was 71,92 U/mL, which is significant in logistic regression analysis (P = 0.005). The preoperative log CA-125 levels were also statistically significant in predicting lymph node metastasis in logistic regression analysis (P = 0.008).
Conclusions:
The tumor marker CA-125, which increases with grade independent of the effect of stage in EOC, is predictive of lymph node metastasis with a high rate of false positivity in Turkish population. The high false positive rate may obscure the predictive value of CA-125.
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