The anti-estrogen drug tamoxifen lowers the risk of dying from lung cancer among women who already had breast cancer.
The finding is published in the journal "Cancer." But researchers warn the results are too preliminary to justify giving the drug to lung cancer patients just yet.
Previous research has shown that taking hormone replacement therapy during menopause upped a woman's chance of dying from lung cancer.
Scientists suggest this newest report provides more evidence that female sex hormones *are* involved in some way in lung cancer progression.