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Surgical pathology examination of radical prostatectomy specimens. Updated protocol based on the Italian TAP study
R Mazzucchelli1, R Montironi, D Prezioso
1Institute of Pathological Anatomy, University of Ancona School of Medicine, Italy.
Abstract:
Between January 1996 and June 2000, 192 men with prostate cancer underwent radical retropubic prostatectomy (RP) and bilateral pelvic node dissection in 26 centers participating in the Italian randomized prospective TAP study. The reviewing pathologist evaluated 145 RP specimens. Seventy-five cases had not been treated with total androgen ablation before RP was performed, whereas 70 had been treated for three months. Whole-mount sectioning of the complete radical prostatectomy specimens was adopted in each center for accurately evaluating the pathological stage of prostate cancer and resection limit status. The results of this study suggest that total androgen ablation before RP is beneficial in men with clinical stage T2 because of the significant pathological down-staging and decrease in the number of positive margins in the RP specimens. On the basis of the experience acquired through the Italian TAP study and recent publications on prognostic factors in prostate cancer, the original practice protocol for examination of RP specimens removed from patients with carcinoma of the prostate glands was updated.
Insights
Neoadjuvant androgen deprivation therapy before radical prostatectomy (RP) significantly improves outcomes for men with T2 prostate cancer. This approach leads to pathological down-staging and fewer positive surgical margins, enhancing treatment effectiveness.
Area of Science:
- Urology
- Oncology
- Pathology
Background:
- Radical retropubic prostatectomy (RP) is a primary treatment for prostate cancer.
- The role of neoadjuvant androgen deprivation therapy (ADT) before RP requires further elucidation, particularly regarding pathological outcomes.
Purpose of the Study:
- To evaluate the impact of neoadjuvant total androgen ablation on pathological staging and margin status in men undergoing radical prostatectomy (RP) for prostate cancer.
Main Methods:
- Prospective randomized trial (Italian TAP study) involving 192 men with prostate cancer.
- 145 RP specimens were evaluated, comparing 75 untreated cases with 70 treated with three months of total androgen ablation prior to RP.
- Whole-mount sectioning of RP specimens was used for accurate pathological staging and assessment of resection margin status.
Main Results:
- Total androgen ablation before RP demonstrated significant pathological down-staging in clinical stage T2 prostate cancer.
- A notable decrease in the number of positive resection margins was observed in patients who received neoadjuvant androgen ablation.
- These findings suggest a beneficial effect of neoadjuvant ADT on surgical outcomes.
Conclusions:
- Neoadjuvant total androgen ablation is beneficial for men with clinical stage T2 prostate cancer undergoing radical prostatectomy.
- The benefits include improved pathological staging and a reduced rate of positive surgical margins.
- Updated practice protocols for examining RP specimens were developed based on these findings and other prognostic factor research.