Rare Side Effect Seen From Breast Cancer Drug

August 25, 2009

The New York Times

A new report suggests that a drug widely used to prevent the recurrence of breast cancer may have a rare but dangerous side effect, increasing the odds that long-term users may develop an uncommon but aggressive new tumor.

But medical experts were quick to question the significance and methodology of the study, saying clinical trials had repeatedly found that the drug, tamoxifen, reduced the recurrence and spread of common breast cancers and that its benefits exceeded any possible risks... Read More