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Correlation between prostate needle biopsies and radical prostatectomy specimens: can we predict pathological
Nor Azhari Bin Mohd Zam1, Puay Hoon Tan, Hong Gee Sim
1Department of Urology, Singapore General Hospital, Outram Road, Singapore.
Pathology
|August 30, 2008
Summary
Prostate needle biopsies accurately predict radical prostatectomy findings. High-risk patients identified by biopsy have a greater chance of adverse pathology, guiding treatment decisions.
Area of Science:
- Urology
- Oncology
- Pathology
Background:
- Prostate needle biopsies are crucial for treatment planning.
- Accurate pathological correlation is needed to identify high-risk patients.
Purpose of the Study:
- To examine the correlation between prostate needle biopsy and radical prostatectomy pathology.
- To predict patients at high risk for adverse pathological findings.
Main Methods:
- Retrospective review of 100 radical prostatectomy patients (2003-2005).
- Comparison of pre-operative clinical and biopsy data with final histology.
- Prospective data collection of pathological findings.
Main Results:
- Under-grading occurred in 27% of biopsies; over-grading in 8%.
- High-risk patients showed significantly higher rates of adverse histology (p=0.041).
- Adverse findings included extraprostatic extension and positive surgical margins.
Conclusions:
- Good pathological correlation exists between prostate needle biopsy and radical prostatectomy.
- Specific biopsy findings (Gleason score ≥7, >50% tumor in core, >50% positive cores) indicate higher risk.
- Sampling error can affect biopsy accuracy, meaning negative findings don't rule out adverse pathology.
