New Prostate Cancer Grading System Validated
A proposed simpler grading system for prostate cancer (PCa) can predict the risk of dying from PCa, according to a new study.

In the new system, PCa patients are placed into 1 of 5 grade groups based on primary and secondary Gleason score (GS) and other criteria, with Grade Group 1 indicating the most favorable prognosis and Grade Group 5 the least favorable. GS 6 cancers (3 + 3) are placed into Grade Group 1 and GS 7 cancers are subdivided into 3 + 4 and 4 + 3 disease. GS 3 + 4 cancers are associated with significantly better prognoses than GS 4 + 3 cancers and are placed into Grade Group 2 and 3, respectively. The new system also subdivides GS 8–10 cancers into GS 8 and GS 9–10 cancers....

http://www.renalandurologynews.com/prostate-cancer/prostate-cancer-mortality-gleason-grade-group-increase/article/629176/
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