Oncologic and quality-of-life outcomes with wide resection in robot-assisted laparoscopic radical prostatectomy - Abstract

OBJECTIVES: To assess urinary quality-of-life (QoL) and oncologic outcomes between wide resection (WR) robot-assisted laparoscopic radical prostatectomy (RALP) and non-WR (NWR) RALP in men with intermediate- or high-risk (Cancer of the Prostate Risk Assessment [CAPRA]-9 >2) prostate adenocarcinoma.

METHODS: Patients undergoing RALP (2004-2013) for intermediate- or high-risk prostate adenocarcinoma were analyzed. Kaplan-Meier methodology with Cox proportional hazards regression evaluated biochemical recurrence-free survival (BCR-FS). Multiple logistic regression was used to determine the relationship between (1) WR with positive surgical margins (+SM) and (2) WR with posterolateral+SM after adjusting for demographics and CAPRA-9 score. University of California, Los Angeles-Prostate Cancer Index and Extended Prostate Cancer Index Composite questionnaires assessed urinary QoL. Multiple mixed-effects linear regression adjusting for demographics and CAPRA-9 evaluated differences in QoL between WR and NWR.

RESULTS: A total of 483 RALP cases met inclusion criteria-129 (26.7%) underwent WR and 354 (73.3%) underwent NWR-RALP. There were no demographic differences between groups. Burden of disease was greater in patients undergoing WR (P< 0.001). There was no difference in+SM rates between WR and NWR (P = 0.505). Adjusting for demographics and CAPRA-9 score, WR patients had a clinically relevant 27% decrease in posterolateral+SM (odds ratio = 0.73; 95% CI: 0.38-1.41; P = 0.351). WR was not associated with worse BCR-FS (hazard ratio = 1.24; 95% CI: 0.83-1.86, P = 0.30). Adjusting for pathology, University of California, Los Angeles and Extended Prostate Cancer Index Composite urinary domain scores were similar between WR and NWR groups.

CONCLUSION: Despite WR patients having worse clinical disease, WR-RALP can be performed with minimal detriment to BCR-FS and urinary QoL. The greater incidence of occult metastasis in higher risk patients may make surgical technique a nonsignificant factor. Nevertheless, WR remains a reasonable option for complete surgical excision.

Written by:
Yang DY, Monn MF, Kaimakliotis HZ, Cary KC, Cheng L, Koch MO.   Are you the author?
Department of Urology, Indiana University School of Medicine, Indianapolis, IN; Department of Pathology, Indiana University School of Medicine, Indianapolis, IN.  

Reference: Urol Oncol. 2014 Sep 15. pii: S1078-1439(14)00259-2.
doi: 10.1016/j.urolonc.2014.07.003

PubMed Abstract
PMID: 25240762

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