Association of endometriosis and breast cancer: mini review of the literature

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This mini-review of the literature examines observational studies that suggest a correlation between endometriosis and breast cancer, though evidence remains inconclusive.

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This mini review systematically searched PubMed and Scopus to summarize 15 studies assessing whether endometriosis is associated with breast cancer, including observational correlations, age-related risk, and proposed mechanisms. The review reports that only a small number of observational studies find a correlation, while other studies note that breast cancer risk increases with age, and a proposed pathway involves early interruption of inflammation by oophorectomy that may reduce risk. It also describes investigation of shared genetic susceptibility via BRCA1 and BRCA2 mutations, but concludes that the overall evidence is inconclusive, explicitly calling for further studies to clarify associations and pathogenetic links. This paper is centrally about endometriosis — it summarizes the literature on a possible relationship between endometriosis and breast cancer.

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Abstract

BACKGROUND: Endometriosis is a common, estrogen-dependent, gynecological disease, which is defined as the presence of endometrial tissue outside the uterine cavity. Current data have associated endometriosis with specific malignancies, including ovarian and breast cancer. PURPOSE: The purpose of our study is to summarize and present published literature providing evidence regarding the possible relationship between endometriosis and breast cancer. METHODS: Pubmed and Scopus databases were searched systematically for studies that sought to identify a potential association of endometriosis and breast cancer. 15 relevant articles were retrieved and included in the present review. RESULTS: A small number of observational studies have shown a correlation of endometriosis and breast cancer. Other studies found that the risk of breast cancer increases with age. The scenario of an early interruption of the inflammatory process, derived from endometriosis, by oophorectomy and a possible consequent decrease in the risk of breast cancer has also been proposed. The hypothesis that both conditions could be related through common mutations on BRAC1 and BRAC2 genes has also been investigated. CONCLUSION: The available published evidence is inconclusive. Further studies are needed to evaluate the association of endometriosis and breast cancer and the possible pathogenetic pathways that relate the two disorders.
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Abstract

Background Endometriosis is a common, estrogen-dependent, gynecological disease, which is defined as the presence of endometrial tissue outside the uterine cavity. Current data have associated endometriosis with specific malignancies, including ovarian and breast cancer. Purpose The purpose of our study is to summarize and present published literature providing evidence regarding the possible relationship between endometriosis and breast cancer.

Methods

Pubmed and Scopus databases were searched systematically for studies that sought to identify a potential association of endometriosis and breast cancer. 15 relevant articles were retrieved and included in the present review.

Results

A small number of observational studies have shown a correlation of endometriosis and breast cancer. Other studies found that the risk of breast cancer increases with age. The scenario of an early interruption of the inflammatory process, derived from endometriosis, by oophorectomy and a possible consequent decrease in the risk of breast cancer has also been proposed. The hypothesis that both conditions could be related through common mutations on BRAC1 and BRAC2 genes has also been investigated.

Conclusion

The available published evidence is inconclusive. Further studies are needed to evaluate the association of endometriosis and breast cancer and the possible pathogenetic pathways that relate the two disorders. Similar content being viewed by others

References

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Condition tags

endometriosis

MeSH descriptors

Breast Neoplasms Endometriosis Breast Neoplasms Breast Neoplasms Endometriosis Endometriosis Estrogens Female Genital Diseases, Female Genital Diseases, Female Genital Diseases, Female Humans Risk

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