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Table 8. Histologic Grade

Reprinted with permission from AJCC: Prostate. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 457-68.
Gleason XGleason score cannot be processed.
Gleason ≤6Well differentiated (slight anaplasia).
Gleason 7Moderately differentiated (moderate anaplasia).
Gleason 8–10Poorly differentiated/undifferentiated (marked anaplasia).