Gleason score for prostate cancer: What to know about Biden’s diagnosis

Gleason score for prostate cancer: What to know about Biden’s diagnosis

Former president received high score for cancer severity, experts say

Former U.S. President Joe Biden has been diagnosed with prostate cancer at the age of 82. (Demetrius Freeman/The Washington Post via Getty Images; iStock)

Pathologists and cancer specialists examine cancerous cells in the prostate tissue to determine the Gleason score. (iStock)

Biden's Gleason score of 9 in grade group 5 indicates an "aggressive" and fast-growing cancer, experts say. (iStock)