Results of repeat prostate biopsy in men with high-grade PIN, according to the number of cores sampled

Group	Number of cores, initial biopsy	Number of cores, rebiopsy	Number of cancers/total number of men	Risk of cancer, percent
1	Six or seven	Six or seven	49/295	17
2	Six or seven	Eight or more	47/173	27
3	Eight or more	Eight or more	37/253	15
4	Eight or more	Six or seven	6/70	9
Overall			139/791	18

Repeat_bx_HGPIN_number_core.htm

PIN: prostatic intraepithelial neoplasia.

Data from Herawi, M, et al. J Urol 2006; 175:121.

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