This one-two punch turns up many prostate cancers that would have gone undetected decades ago, but quite often men have PSA scores that fall into a gray area, he says.

• 这种双管齐下的检测方式在过去的数十年里为许多潜在的前列腺患者确诊。但是研究发现许多人的PSA指标跟实际情况仍有误差。