The long-term outcomes of radical prostatectomy for very high-risk prostate cancer pT3b-T4 N0-1 on definitive histopathology.

INTRODUCTION

The study aimed to assess long-term outcomes in patients with very high-risk prostate cancer (PCa) - pT3b-T4 N0-1 using the definitive histopathology following radical retropubic prostatectomy (RRP).

MATERIAL AND METHODS

We have analyzed 114 patients with very high-risk PCa who underwent RRP between 1995 and 2012. Biochemical and clinical progression-free survival (BPFS, CPFS), cancer-specific and overall survival (CSS, OS) curves were constructed according to the Kaplan-Meier method. Univariate and multivariate Cox regression analysis was utilized to determine predictability of clinical and pathological parameters.

RESULTS

At the 5 and 10 year mark, the BPFS was 71.3% and 35%, respectively; the CPFS was 86.8% and 69.2%, respectively; the CSS was 98% and 76.3%, respectively and the OS was 90.3% and 62.4%, respectively. Sixteen patients (14%) had lymph-node involvement. Positive surgical margins were present in 64 (56.1%) patients. Neo-adjuvant androgen deprivation therapy (ADT) was received by 22 (19.3%) patients. Adjuvant ADT alone or in combination with external radiotherapy was received by 59 (51.8%) patients. No adjuvant treatment was needed in 29 (25.4%) patients. In univariate and multivariate analysis, neo-adjuvant ADT was associated with an increased risk of BPFS and CPFS.

CONCLUSIONS

Therapy applied in patients with very high-risk PCa was multimodal in most cases, with RP usually being the first step. The study confirmed that very high-risk PCa is a heterogeneous disease. A significant subset of patients remain without adjuvant therapy treatment.