Navigation Links
Ovary removal may increase lung cancer risk
Date:7/21/2009

This press release is available in French.

Montreal, July 21, 2009 Women who have premature menopause because of medical interventions are at an increased risk of developing lung cancer, according to a new study published in the International Journal of Cancer. The startling link was made by epidemiologists from the Universit de Montral, the Research Centre of the Centre Hospitalier de l'Universit de Montral and the INRSInstitut Armand-Frappier.

"We found that women who experienced non-natural menopause are at almost twice the risk of developing lung cancer compared to women who experienced natural menopause," says Anita Koushik, a researcher at the Universit de Montral's Department of Social and Preventive Medicine and a scientist at the Research Centre of the Centre Hospitalier de l'Universit de Montral. "This increased risk of lung cancer was particularly observed among women who had non-natural menopause by having had both their ovaries surgically removed."

The scientists studied 422 women with lung cancer and 577 control subjects at 18 hospitals across Montreal, Quebec, Canada. They assessed socio-demographic characteristics, residential history, occupational exposures, medical and smoking history, and (among women) menstruation and pregnancy histories.

"A major strength of this study was the detailed smoking information which we obtained from all study participants; this is important because of the role of smoking in lung cancer and because smokers generally have lower estrogen levels than non-smokers," says Dr. Koushik. "Although smoking is the dominant cause of lung cancer, we know other factors can play an important role in enhancing the impact of tobacco carcinogens; this research suggests that in women hormonal factors may play such a role."

Women were considered menopausal if their menstrual periods had stopped naturally, surgically (by hysterectomy with bilateral surgical ovary removal) or because of radiation or chemotherapy. Women who had at least one remaining ovary and who still had their menstrual periods at the time of diagnosis/interview were classified as premenopausal. Among participants with natural menopause, the median age for attaining menopause was 50 years old; among those with non-natural menopause, it was at 43 years.

"Non-natural menopause, particularly surgical menopause, may represent an increased risk with younger age at menopause given that surgery is usually done before natural menopause occurs. It's possible that vulnerability to lung cancer is caused by early and sudden decrease in estrogen levels or potentially long-term use of hormone replacement therapy and further research is needed to explore these hypotheses," says Jack Siemiatycki a professor at the Universit de Montral's Department of Social and Preventive Medicine and a scientist at the Research Centre of the Centre Hospitalier de l'Universit de Montral.


'/>"/>

Contact: Sylvain-Jacques Desjardins
sylvain-jacques.desjardins@umontreal.ca
514-343-7593
University of Montreal
Source:Eurekalert

Related medicine news :

1. Ovary Removal Protects Some High-Risk Women
2. Recurrent low-grade carcinoma of the ovary less responsive to chemo than more common ovarian cancers
3. SurgiQuest Announces First Single Port Procedure for Uterus and Ovary Removal Using AirSeal(TM) Access System
4. Ovary Removal Lowers Odds of Cancer in High-Risk Women
5. Ovary Removal May Not Be Needed in Endometrial Cancer
6. Physician Team at Northwestern Memorial Performs Rare Oral Gallbladder Removal
7. Detroit Metro Tower Air Traffic Controllers File Lawsuit Alleging Improper Mold Removal and Health Effects
8. Spectranetics Receives Reimbursement Approval in Belgium for Lead Removal and Peripheral Atherectomy Products
9. First colonoscopy with removal of polyps linked to reduction in colon cancer death
10. oh2 Medical Spa and Vein Removal Center Set to Open Doors in December
11. Initial Evaluation of New Nucleus Removal Device Provides Promising Results
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/15/2017)... ... January 15, 2017 , ... Going above and beyond ... strives to better communities around the world by offering the Gensuite team and ... opportunity for team members to become involved in a cause that is bigger ...
(Date:1/15/2017)... ... 14, 2017 , ... Wondering where to go this Valentine's Day? Well, there ... for a romantic, lobster feast in the comfort of your own home. Lobster Gram ... dinners will be featured until February 15th, 2017. , Romantic Dinner one is ...
(Date:1/14/2017)... ... 2017 , ... AgileMinder develops innovative products and services that bring "Care, Joy ... on Apple as a fun, free emoji sticker pack for iMessage. Use the stickers ... color coded values on The Emoji Scale. , On Apple: "The Emoji Scale ...
(Date:1/13/2017)... , ... January 13, 2017 , ... KOAMTAC ®, ... will be showcasing the next generation companion scanner and data collector at the National ... KDC270 has been created as an answer to the market’s need for more compact ...
(Date:1/13/2017)... (PRWEB) , ... January 13, 2017 , ... "We wanted ... attractive to wear," said one of two inventors from Virginia Beach, Va. , They ... normally mundane braces. , The accessories allow braces to be customized to suit ...
Breaking Medicine News(10 mins):
(Date:1/13/2017)... DALLAS, Pa. , Jan. 13, 2017  Secretary ... crowd of students, professors, and community members at Misericordia ... the opioid epidemic in Pennsylvania . ... health crisis I,ve seen so far in my professional ... Pennsylvania has been hit hard by heroin ...
(Date:1/13/2017)... BOISE, Idaho , Jan. 12, 2017 /PRNewswire/ ... status by Accreditation Commission for Health Care (ACHC) ... the largest national food and drug chain with ... service for pharmacy patients. Accreditation by ... meeting national standards to facilitate a higher level ...
(Date:1/12/2017)... According to a new market research report ... (Nebulizer), Injectable (Device), Ocular (Liquid), Topical (Solid), Implantable (Active), Transmucosal (Oral)), ... by MarketsandMarkets, market is projected to reach USD 1,669.40 Billion by ... 7.2% during the forecast period. Continue ... ...
Breaking Medicine Technology: