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Wednesday, February 23, 2011

Estrogen not linked to lung cancer mortality in postmenopausal women

postmenopausal womenWashington, August 14 : A new study has found that use of estrogen alone did not increase lung cancer mortality in postmenopausal women.
In the Women''s Health Initiative (WHI) trial, which consisted of several clinical trials on postmenopausal women, one study showed women with previous hysterectomy taking combined estrogen plus progestin therapy had a statistically significant increase in lung cancer mortality, but not incidence.
Other studies with combined hormone therapy have had conflicting results. But the influence ofestrogen alone was unclear.
To determine whether use of estrogen alone was associated with lung cancer incidence and increased lung cancer mortality, Rowan T. Chlebowski, of the Los Angeles Biomedical Research Institute, and colleagues, in a post-hoc analysis examined data from a previous randomized, double-blind, placebo-controlled trial in the WHI.

This trial was conducted in 40 centers in the U. S., in which 10,739 postmenopausal women aged 50-79 years with a hysterectomy were randomly assigned to groups receiving estrogenalone or placebo.
The researchers found there was only one more death from lung cancer in the estrogen group (34 deaths) compared with the placebo group (33 deaths).
Their conclusion was that use of estrogen alone was not associated with lung cancer incidence or death from lung cancer in women with hysterectomies.
The study has been published online August 13 in The Journal of the National Cancer Institute. (ANI)


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