But screening can't determine danger; many treated unnecessarily
(NEWSER) - One-third of breast cancers that show up on mammograms may be essentially harmless, meaning that treating every tumor causes unnecessary trauma, a five-nation study suggests. A mammogram doesn't reveal whether a cancer is lethal or harmless, so all get treated when some could be merely monitored, the BBC reports. The finding means "that screening for cancer, in this case breast cancer, is a much closer call than has been previously advertised," writes a Dartmouth researcher. More»
