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KMID : 1137020200310050058
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Journal of Gynecologic Oncology
2020 Volume.31 No. 5 p.58 ~ p.58
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Incidence and predictors of peritoneal metastases of gynecological origin: a population-based study in the Netherlands
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Burg Lara
Timmermans Maite
van der Aa Maaike
Boll Dorry
Rovers Koen
de Hingh Ignace
van Altena Anne
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Abstract
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Objective: Peritoneal metastases (PM) are a challenge in gynecological cancers, but its appearance has never been described in a population-based study. Therefore, we describe the incidence of PM and identify predictors that increase the probability of peritoneal spread.
Methods: All ovarian, endometrial and cervical cancer patients diagnosed in the Netherlands between 1989 and 2015 were identified from the Netherlands Cancer Registry and stratified for PM. Crude and age-adjusted incidence over time was calculated. Independent predictors for PM were identified using uni- and multivariable analyses.
Results: The 94,981 patients were diagnosed with ovarian, endometrial or cervical cancer and respectively 61%, 2% and 1% presented with PM. Predictors for PM in ovarian cancer were: age between 50 and 74 years (odds ratio [OR]=1.19; 95% confidence interval [CI]=1.08?1.32), other distant metastases (OR=1.25; 95% CI=1.10?1.41), poor differentiation grade (OR=2.00; 95% CI=1.73?2.32) and serous histology. Predictors in endometrial cancer were lymph node metastases (OR=2.32; 95% CI=1.65?3.26), other distant metastases (OR=1.38; 95% CI=1.08?1.77), high-grade tumors (OR=1.95; 95% CI=1.38?2.76) and clear cell (OR=1.49; 95% CI=1.04?2.13) or serous histology (OR=2.71; 95% CI=2.15?3.42). In cervical cancer, the risk is higher in adenocarcinoma than in squamous cell carcinoma (OR=4.92; 95% CI=3.11?7.79).
Conclusion: PM are frequently seen in patients with ovarian cancer. In endometrial and cervical cancer PM are rare. Histological subtype was the strongest predictive factor for PM in all 3 cancers. Better understanding of predictive factors for PM and thus the biological behavior is of paramount importance.
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KEYWORD
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Peritoneal Neoplasms, Ovarian Neoplasms, Endometrial Neoplasms, Uterine Cervical Neoplasms, Incidence, Epidemiology
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