Initial Extended Transrectal Prostate Biopsy—Are More Prostate Cancers Detected With 18 Cores Than With 12 Cores?

Abstract

Compared with 12-core prostate biopsy, 18-core prostate biopsy detects significantly more cases of high grade prostatic intraepithelial neoplasia. However, 18-core prostate biopsy detects a significantly higher number of cancer only in patients with a prostate volume of 55 cc or greater.