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Preoperative prostate-specific antigen in predicting pathologic stage and grade after radical prostatectomy
H I Winter1, P R Bretton, H W Herr
1Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, New York.
Urology
|September 1, 1991
Summary
Preoperative prostate-specific antigen (PSA) levels correlate with prostate cancer stage and grade. Elevated PSA is common in extracapsular disease, but individual staging preoperatively remains challenging.
Area of Science:
- Urology
- Oncology
- Medical Diagnostics
Background:
- Prostate-specific antigen (PSA) is a biomarker used in prostate cancer detection.
- Accurate preoperative staging is crucial for effective prostate cancer treatment planning.
Purpose of the Study:
- To correlate preoperative serum PSA levels with the pathologic stage and grade of clinically localized prostate cancer.
- To evaluate the diagnostic performance of serum PSA in distinguishing between organ-confined and extracapsular prostate cancer.
Main Methods:
- Serum PSA was measured preoperatively in 63 men with localized prostate cancer.
- Patients underwent radical prostatectomy and pelvic lymph node dissection.
- Pathologic stage and tumor grade were correlated with preoperative PSA values.
Main Results:
- 61% of organ-confined and 90% of extracapsular prostate cancer cases had PSA > 4 ng/mL.
- 62% of low-grade and 80% of high-grade tumors showed elevated PSA.
- A PSA cutoff of 10 ng/mL had 68% sensitivity and 66% specificity for extracapsular disease.
Conclusions:
- Preoperative serum PSA levels show a trend correlating with higher prostate cancer stage and grade.
- While elevated PSA is more frequent in advanced disease, it has limited accuracy for individual preoperative staging.
- Further advancements are needed for precise preoperative determination of prostate cancer stage and grade.