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Hum Reprod Update. 2011 Jan-Feb;17(1):55-67. doi: 10.1093/humupd/dmq030. Epub 2010 Jul 15.

Tubal ligation and the risk of ovarian cancer: review and meta-analysis.

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  • 1Oncogynecological Centre, Department of Obstetrics and Gynecology, General Teaching Hospital, First Medical School, Charles University, Prague, Czech Republic. david.cibula@iol.cz

Abstract

BACKGROUND:

The reduction of ovarian cancer (OC) risk in women with a history of tubal ligation (TL) has been reported repeatedly, mostly on small populations. We have aimed to provide a critical overview of the studies available to date and to conduct a meta-analysis.

METHODS:

There were 40 relevant studies identified. The studies were divided into two groups for strict and extended meta-analysis, respectively. Subgroup analysis was performed for age, time dependency since TL, histological types of OC and BReast CAncer (BRCA) mutation.

RESULTS:

Meta-analysis of 13 strictly selected studies showed a reduced risk of epithelial OC by 34%. The protective effect of TL was confirmed even in a subgroup of women 10-14 years after the procedure. The risk reduction was confirmed for the endometrioid (RR = 0.40) and serous (RR = 0.73) cancers but not for mucinous.

CONCLUSIONS:

The review of relevant articles, as well as the meta-analysis of selected studies, yields consistent data on a significant reduction of OC risk in women who had undergone TL. The results of this meta-analysis should provide an impulse for further research on the etiology of ovarian epithelial cancers, focusing particularly on the importance of retrograde transport of endometrial cells.

PMID:
20634209
[PubMed - indexed for MEDLINE]
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