Prostate cancer: Gleason grading is used to describe prostate cancer under a low-power microscope. The two most prominent findings are assigned a score from 1-5, based on specific critieria (degree of departure from normal gland structure). These 2 numbers are added together to get the gleason sum. Most common results are gleason 3+3=6. The higher the numbers, the more aggressive the cancer.
Answered 11/28/2017
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