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We wanted to determine whether serial transperineal sector prostate biopsies have a long-term effect on erectile dysfunction (ED). A total of 64 men with prostate cancer entered our active surveillance (AS) programme after a transrectal prostate biopsy as well as a confirmatory initial transperineal sector prostate biopsy (TPSBx). A repeat TPSBx was performed 24 months later as part of our active surveillance protocol. The International Index of Erectile Function-5 (IIEF-5) questionnaire assessed ED at baseline prior to each TPSBx, and at one, three, and six months after first and second TPSBx.  There was a significant short-term deterioration in erectile function on mean IIEF-5 score between baseline (19.5), when compared to one month (10.5) (P <0.001) and three months (18.7) (P = 0.001) following first TPSBx. This resolved at six month follow-up (19.6) (P = 0.681). Following second TPSBx, there was a deterioration in erectile function between baseline (16.6), compared to one month (7.3), three months (13.8), and six months (15.9) (P <0.05) following second TPSBx. Initial TPSBx caused significant short-term ED, which resolved by six months. Serial TPSBx appears to have an adverse impact on erectile function in men monitored on AS, increasing the risk of long-term ED. This risk should be highlighted and discussed during the consent process.

Serial transperineal sector prostate biopsies: impact on long-term erectile dysfunction