Endometriosis and an increased risk of malignancies

In: Journal of Education, Health and Sport · 2020 · vol. 10(9) , pp. 290–298 · doi:10.12775/jehs.2020.10.09.033 · W3128466733
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AI-generated summary by claude@2026-06, 2026-06-06

Endometriosis shares molecular characteristics with cancer and is associated with an increased risk of ovarian, skin, brain, thyroid, and non-Hodgkin lymphoma cancers.

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This paper reviews evidence that endometriosis, affecting about 7–15% of women of reproductive age, is associated with an increased risk of certain malignancies, while noting that some cancer risks are decreased or inconsistent. It describes shared molecular and cellular features between endometriosis and invasive cancer—such as inflammation, tissue invasion, angiogenesis, immune cell dysfunction, and pro-survival traits—and summarizes epidemiologic findings including higher risk of ovarian cancer subtypes (clear cell, endometrioid, and serous) and increased associations with several non-gynecologic cancers (e.g., melanoma, non-Hodgkin lymphoma, brain, and thyroid), while reporting inconsistent results for uterine corpus and breast cancer and decreased risk for uterine cervix cancer. A key limitation explicitly stated is that further research is needed to determine the true risk magnitude for different tumor types and to establish appropriate long-term surveillance strategies. This paper is centrally about endometriosis — it focuses on how endometriosis relates to increased risk of malignancies.

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Abstract

Introduction: Endometriosis is a common gynaecological disorder associated with pelvic pain and sub-fertility, affecting 7–15% of women of reproductive age. The disease is defined as the presence of endometrial-like tissue outside the uterine cavity, primarily on pelvic organs. The aetiology of endometriosis is still uncertain. The disease rarely causes mortality, however, it may have a significant impact on a patient's quality of life. Moreover, several studies have consistently shown that endometriosis is associated with a higher risk of some types of malignancies.Results: Endometriosis shares several molecular characteristics with invasive cancer, such as inflammation, tissue invasion, angiogenesis, dysfunction of immune cells and pro-survival features. Studies have shown that ovarian cancer, especially clear cell, endometrioid and serous, has been associated with endometriosis. Furthermore, the risk of cancer of the uterine cervix has shown to be decreased and the results on the risk of the cancers of uterine corpus or breast are inconsistent. Among non‐gynecological cancers, melanoma of the skin, non‐Hodgkin‐lymphoma, brain and thyroid cancers have also been associated with endometriosis.Conclusions: Research results indicate that women with endometriosis have an increased risk for some types of malignancies, therefore, they should be under strict gynecological control, even many years after menopause. Further research is needed to prove the real risk of different types of malignant tumors among women with endometriosis. In addition, it is necessary to establish periodic examination schedules among these patients in order to prevent certain types of malignancies.
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Introduction

Endometriosis is a common gynaecological disorder associated with pelvic pain and sub-fertility, affecting 7–15% of women of reproductive age. The disease is defined as the presence of endometrial-like tissue outside the uterine cavity, primarily on pelvic organs. The aetiology of endometriosis is still uncertain. The disease rarely causes mortality, however, it may have a significant impact on a patient's quality of life. Moreover, several studies have consistently shown that endometriosis is associated with a higher risk of some types of malignancies.

Results

Endometriosis shares several molecular characteristics with invasive cancer, such as inflammation, tissue invasion, angiogenesis, dysfunction of immune cells and pro-survival features. Studies have shown that ovarian cancer, especially clear cell, endometrioid and serous, has been associated with endometriosis. Furthermore, the risk of cancer of the uterine cervix has shown to be decreased and the results on the risk of the cancers of uterine corpus or breast are inconsistent. Among non‐gynecological cancers, melanoma of the skin, non‐Hodgkin‐lymphoma, brain and thyroid cancers have also been associated with endometriosis.

Conclusions

Research results indicate that women with endometriosis have an increased risk for some types of malignancies, therefore, they should be under strict gynecological control, even many years after menopause. Further research is needed to prove the real risk of different types of malignant tumors among women with endometriosis. In addition, it is necessary to establish periodic examination schedules among these patients in order to prevent certain types of malignancies.

References

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