Temporal Trend in Incidental Prostate Cancer Detection at Surgery for Benign Prostatic Hyperplasia

Abstract

ObjectiveTo assess changes in the rate of incidental prostate cancer (PCa) after benign prostatic hyperplasia (BPH) surgery over the last decade. Materials and MethodsWe identified 1177 patients surgically treated for BPH (open prostatectomy, transurethral resection or holmium laser enucleation [HoLEP] of the prostate) in 2007-2016 at a single European academic center. Local polynomial regression was used to explore changes in the rate of incidental PCa detected after BPH surgery and of preoperative biopsy performed over time. Logistic regression analyses tested the association of incidental PCa diagnosis with year of surgery and preoperative biopsy. ResultsIncidental PCa was found in 6.4% (74) of cases, 67 (91%) with Grade group 1 disease. We observed an increased incidence of PCa diagnosis after BPH surgery over time (odds ratio [OR]: 1.12; 95%confidence interval [CI]: 1.02-1.24, P = .02) along with a concomitant decrease in the rate of preoperative prostate biopsies (OR: 0.83; 95%CI: 0.79-0.88, P < .0001). Patients undergoing a preoperative biopsy showed a lower risk of being diagnosed with PCa after surgery (OR: 0.29; 95% CI: 0.12, 0.72 P = .007). Patients treated with HoLEP had a higher chance of incidental PCa detection (OR: 2.28; 95%CI: 1.30–4.00; P = .004), although this may be related to the significantly higher number of HoLEP performed over the last years. ConclusionThe increased rate of low-risk PCa detected after BPH surgery in the last decade reflects the clinical practice changes in PCa screening and diagnosis leading to a reduced number of unnecessary biopsies and indolent cancer diagnosis.