Sensitivity and Detection Rate of a 12-Core Trans-Perineal Prostate Biopsy: Preliminary Report

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Objectives: The various prostate biopsy methods are usually compared in terms of the diagnosis rate of prostate cancer. However, the prevalence of cancer in patients with a negative prostatic biopsy is not usually known. We determined the sensitivity and detection rate of 12-core transperineal biopsies in patients not previously investigated for prostate cancer. Methods: We performed prostate biopsy in 63 patients (median age 67 years) before radical cystoprostatectomy for high-grade bladder cancer. We then assessed the relationships between biopsy result, prostate cancer in the surgical specimen, and other variables. Results: 17.2% of patients had a positive biopsy and 54% had prostate cancer on definitive histology. Biopsy sensitivity was 32.3% overall, 75% for clinically significant cancers, and 11% for non-significant cancers. Median PSA was 1.2 ng/ml, PSA levels did not correlate with the presence of prostate cancer, the presence of clinically significant cancer, bioptic diagnosis, or prostate volume. Age correlated with risk of cancer. Conclusions: According to autopsy series, the prevalence of prostate cancer is greater than 50% in males older than 60, yet low PSA levels do not reliably indicate disease absence. The sensitivity of double sextant biopsy is unsatisfactory overall (32%), but acceptable (75%) for diagnosing clinically significant cancer. © 2005 Elsevier B.V. All rights reserved.




Rocco, B., de Cobelli, O., Leon, M. E., Ferruti, M., Mastropasqua, M. G., Matei, D. V., … Rocco, F. (2006). Sensitivity and Detection Rate of a 12-Core Trans-Perineal Prostate Biopsy: Preliminary Report. European Urology, 49(5), 827–833.

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