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Patients diagnosed with poorly differentiated prostate cancer (Gleason score 8 to 10) on biopsy do not uniformly have a poor prognosis. Of the patients 39% remain free of cancer recurrence 10 years after radical prostatectomy. Of these cancers 45% have a lower Gleason score in the radical prostatectomy specimen and a correspondingly more favorable long-term outcome. Predictors of downgrading are lower clinical stage (cT1c) and Gleason score 8 in the biopsy specimen.
Donohue et al. (Wed,) studied this question.