Endometriosis is a common, and often painful, gynecological disease where tissue normally found inside the uterus, grows elsewhere in the body. According to the World Health Organization this estrogen-dependent disease affects roughly 14% of women of childbearing age. The National Institutes of Health (NIH) estimates that more than 5.5 million women in North America have endometriosis, and if left untreated can cause infertility in up to 40% of women who are unable to conceive.
Prior research shows an increased risk of several cancers, including ovarian cancer, in women with endometriosis. Some studies have found a protective effect against ovarian cancer with surgical interventions, such as hysterectomy or tubal ligation. Lead author, Dr. Anna-Sofia Melin from the Karolinska Institute and Karolinska University Hospital in Stockholm, Sweden explains, "Patients with endometriosis are typically treated with hormones, or in more severe cases, with surgery. We wanted to expand understanding of ovarian cancer risk in women with endometriosis who had some type of surgery or hormone therapy."
Using the National Swedish Patient Register, the team identified women diagnosed with endometriosis between 1969 and 2007. The National Swedish Cancer Register was then used to link women who were diagnosed with epithelial ovarian cancer at least one year following a diagnosis of endometriosis. Information on hormonal and surgical treatments was taken from medical records of the 220 women with endometriosis and ovarian cancer (cases) and 416 women with endometriosis only (controls).
Findings indicate a significant association between the surgical removal of an ovary (oophorectomy) and ovarian cancer risk. A significant link between ovarian cancer risk and radical removal of all visible endometriosis was also found. "Our study suggests that surgical removal of an ovary and removal of visible endometriosis protects women from developing ovarian cancer at a later point," concludes Dr. Melin. "For women with endometriosis, the role of hormonal treatment and future ovarian cancer risk remains unclear and further investigation is warranted."
This study is published in Acta Obstetricia et Gynecologica Scandinavica. Media wishing to receive a PDF of the article may contact firstname.lastname@example.org.
Full citation: Hormonal and Surgical Treatments for Endometriosis and Risk of Epithelial Ovarian Cancer." Anna-Sofia Melin, Cecilia Lundholm, Ninoa Malki, Marja-Liisa Swahn, Par Sparen and Agneta Bergqvist. Acta Obstetricia et Gynecologica Scandinavica; Published online: April 11, 2013 (DOI: 10.1111/aogs.12123)
Author Contact: To arrange an interview with Dr. Melin, please contact Katarina Sternudd with Karolinska Institute at Katarina.email@example.com.
About the Journal:
Acta Obstetricia et Gynecologica Scandinavica is the official scientific journal of the Nordic Federation of Societies of Obstetrics and Gynecology (NFOG). It is a clinically oriented journal that covers all aspects of obstetrics, gynecology and reproductive health, including perinatology, gynecologic endocrinology, female urology and gynecologic oncology. The journal is published in English and includes: editors´ messages, editorials, Acta commentaries, Acta reviews and original articles under the main categories of investigation, pregnancy, birth, fertility, infection, gynecology, gynecologic urology, oncology and surgery. The journal is published by Wiley on behalf of the NFOG. For more information, please visit http://wileyonlinelibrary.com/journal/aogs.
Wiley is a global provider of content-enabled solutions that improve outcomes in research, education, and professional practice. Our core businesses produce scientific, technical, medical, and scholarly journals, reference works, books, database services, and advertising; professional books, subscription products, certification and training services and online applications; and education content and services including integrated online teaching and learning resources for undergraduate and graduate students and lifelong learners.
Founded in 1807, John Wiley & Sons, Inc. (NYSE: JWa, JWb), has been a valued source of information and understanding for more than 200 years, helping people around the world meet their needs and fulfill their aspirations. Wiley and its acquired companies have published the works of more than 450 Nobel laureates in all categories: Literature, Economics, Physiology or Medicine, Physics, Chemistry, and Peace. Wiley's global headquarters are located in Hoboken, New Jersey, with operations in the U.S., Europe, Asia, Canada, and Australia. The Company's website can be accessed at http://www.wiley.com.
Dawn Peters | EurekAlert!
Amputees can learn to control a robotic arm with their minds
28.11.2017 | University of Chicago Medical Center
The importance of biodiversity in forests could increase due to climate change
17.11.2017 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...
An interdisciplinary group of researchers interfaced individual bacteria with a computer to build a hybrid bio-digital circuit - Study published in Nature Communications
Scientists at the Institute of Science and Technology Austria (IST Austria) have managed to control the behavior of individual bacteria by connecting them to a...
Physicists in the Laboratory for Attosecond Physics (run jointly by LMU Munich and the Max Planck Institute for Quantum Optics) have developed an attosecond electron microscope that allows them to visualize the dispersion of light in time and space, and observe the motions of electrons in atoms.
The most basic of all physical interactions in nature is that between light and matter. This interaction takes place in attosecond times (i.e. billionths of a...
11.12.2017 | Event News
08.12.2017 | Event News
07.12.2017 | Event News
11.12.2017 | Physics and Astronomy
11.12.2017 | Earth Sciences
11.12.2017 | Information Technology