As many have wondered, what is the Gleason score and why it is important. The Gleason grading system is used to evaluate the prognosis of prostate cancer with the samples taken from prostate biopsy. So based on the microscopic appearance of the prostate cancer, a Gleason score would be given. And a high score refers to the cancers with more aggressive behaviors and worse prognosis. The scores range from 2 to 10, and as the numerical value goes up, the risks also increase and the mortality becomes higher.
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