Dr. Eichenfield pointed out that among Danish patients who used an oral contraceptive for less than 5 years, the excess risk of breast cancer went away within a year of stopping the medication. If patients used hormonal contraception for more than 5 years, the excess breast cancer risk lasted for 5 years after stopping.
He noted that the antiandrogen spironolactone, widely used off-label to treat adult female acne, has been shown to be free of any increased breast cancer risk.
He reported serving as a consultant to and/or recipient of research grants from more than a dozen pharmaceutical companies.
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