. Author manuscript; available in PMC: 2018 Apr 1.

Published in final edited form as: J Urol. 2016 Nov 1;197(4):1026–1033. doi: 10.1016/j.juro.2016.10.090

Table 2.

Reasons for adverse prostate cancer reclassification in the 89 men in the Canary Prostate Active Surveillance Study reclassified at the time of first active surveillance biopsy

	No Grade Reclassification (Gleason Pattern 3+3) N(%¹)	Grade Reclassification (Gleason pattern 3+4) N(%¹)	Grade Reclassification (Gleason Pattern 4+3) N(%¹)
No volume reclassification (<34% cores involved in cancer)	N/A	43 (48.3%)	12 (13.5%)
Volume Reclassification (≥34% cores involved in cancer)	12 (13.5%)	15 (16.9%)	7 (7.8%)

Percent of the 89 reclassified men.