Five Year Follow-up after Radical Prostatectomy for Localized Prostate Cancer—a Study of the Impact of Different Tumor Variables on Progression

Abstract

Fifty-one patients with clinically localized prostate cancer stages A and B, who underwent radical prostatectomy have been followed for a minimum of 5 years. The impact of age, stage, capsular penetration, total tumor volume, Gleason score, seminal vesicle invasion and lymph node metastases on progression has been evaluated. Progression free survival was calculated according to the Kaplan-Meier method. Uni- and multivariate analyses were performed according to the Cox proportional hazards model. During the observation period 16 patients (31%) experienced progression. Tumor volume, grade and seminal vesicle invasion emerged as statistically significant predictors of tumor progression in the survival analyses while age at surgery, preoperative stage and different levels of capsular penetration were not statistically significant. The findings in the Cox models were in accordance with those at actuarial survival analyses though tumor volume was the only variable proven to have an independent statistically significant influence on progression.

Keywords:

• prostate cancer
• radical prostatectomy
• followup
• tumor progression
• multivariate analyses