ArticleTherapeutic advances in urology
Incidental prostate cancer: is prostate-specific antigen density a valid predictor? A case-control study.
Article in Therapeutic advances in urology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Purpose: To evaluate if prostate-specific antigen density (PSAD) predicts incidental prostate cancer (iPCa) in patients undergoing robot-assisted simple prostatectomy (RASP) for benign prostatic hyperplasia (BPH). Methods: A total of 100 consecutive patients undergoing RASP for BPH were analyzed. Patients were stratified into low-risk and higher-risk groups based on their iPCa risk: 60 patients (PSAD ⩽ 0.1 ng/mL/cc) and 40 patients (PSAD > 0.1 ng/mL/cc), respectively. Outcomes included iPCa detection rates, preoperative imaging/biopsy utilization, and postoperative complications. A multivariable logistic regression and an univariate linear regression analysis were conducted to assess whether PSAD can predict the incidence of PCA. Results: iPCa was detected in 8% of cases. Five patients had <5% tumor material in their final pathology (pT1a), while three had more than 5% (pT1b). iPCa was detected in eight patients, six with International Society of Urological Pathology (ISUP) 1 and 2 with ISUP > 2. Patients with ISUP 1 were managed with active surveillance; only one chose robot-assisted radical prostatectomy, and the two with ISUP 2 and 3 opted for external radiation. Seven iPCa cases occurred in the low-PSAD group (11.7%), and one in the high-PSAD group (2.5%). In multivariate logistic regression, only a prior negative prostate biopsy was the strongest predictor of iPCa (odds ratio = 5.2, Conclusion: PSAD, whether dichotomized (threshold of >0.1 ng/mL/cc) or continuous, didn't predict iPCa in men with large prostates. To optimize cancer detection, patients with large prostates may profit from prostate MRI before bladder outlet surgery, especially those with a history of prior prostate biopsy. Further research, including larger multicenter studies, is needed to validate our results.
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