The lowest Gleason Score of a cancer found on a prostate biopsy is 6. These cancers may be called well-differentiated or low-grade and are likely to be less aggressive - they tend to grow and spread slowly. 

Cancers with Gleason Scores of 8 to 10 may be called poorly differentiated or high grade.  These cancers tend to be aggressive, meaning they are likely to grow and spread more quickly.

Cancers with a Gleason Score of 7 may be called moderately differentiated or intermediate grade.  The rate at which they grow and spread tends to be in between the other 2.

Early detection saved my life.  More men need to know about their risk, and their opportunities to get screened.

~ Keith Wegen, prostate cancer survivor

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