A new study suggests that low-grade prostate cancer in a significant number of cases will not become aggressive with time, reaffirming that active surveillance is an appropriate approach. 

Harvard researchers found that after the introduction of widespread PSA screening, the proportion of patients diagnosed with advanced-stage cancers dropped by more than sixfold in 22 years, but the proportion diagnosed with high Gleason grade cancers did not change substantially. 

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John Schieszer has the story in today’s Medical Minute.