Introduction: The objective of this study was to determine whether the tumor volume in radical prostatectomy specimens of patients with prostate cancer who underwent neoadjuvant hormonal therapy (NHT) could be used as a prognostic predictor.
Patients And Methods: In this study, we included 96 patients who underwent NHT followed by radical prostatectomy between January 1995 and July 2003 in our institutions. Several clinicopathological factors of these patients were analyzed, focusing on the association between tumor volume in radical prostatectomy specimens and disease recurrence.
Results: The tumor volume in radical prostatectomy specimens after NHT was significantly associated with capsular penetration, seminal vesicle invasion, and lymph node metastases, among the factors examined in this study. The biochemical recurrence-free survival rates in patients with tumor volumes <1.0 cm(3) were significantly higher than in those having tumor volumes > or =1.0 cm(3). However, multivariate analysis showed that the tumor volume could not be used as an independent predictor for biochemical recurrence.
Conclusions: In patients who received NHT prior to radical prostatectomy, the tumor volume was shown to correlate with other prognostic indicators. Furthermore, a higher probability of biochemical recurrence was noted, when there was a residual tumor volume > or =1.0 cm(3) after NHT. Thus, careful follow-up and, if necessary, additional treatment should be considered in cases demonstrating tumor volumes > or =1.0 cm(3) after NHT.
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