Mid-term biochemical recurrence-free outcomes following robotic versus laparoscopic radical prostatectomy.

Abstract

We compared 5-year biochemical recurrence (BCR)-free rates for robotic-assisted laparoscopic prostatectomy (RALP) and laparoscopic radical prostatectomy (LRP). Three hundred and twelve consecutive patients who underwent RALP from 2003 to 2008 were compared to 97 consecutive LRP patients from 1999 to 2004. All laparoscopic surgeries were performed by one surgeon and robotic surgeries were performed by this surgeon or a laparoscopically naïve surgeon. Both groups were evaluated for perioperative outcome, pathologic status, and mid-term oncologic outcomes (5-year BCR-free rates at prostate-specific antigen [PSA] cutoffs of <0.4, <0.2, or <0.1ng/ml). Baseline characteristics were equivalent except for age (61.9 years vs. 65.1years, P<0.0001). RALP operating time was shorter (215.5min vs. 305.3, P<0.0001), and resulted in fewer complications (3.8% vs. 10.3%, P=0.0214) and blood transfusions (2.9% vs. 13.4%, P=0.0003). Positive surgical margins were equivalent (pT2 20.9% vs. 28.8%, P=0.1818). Overall 5-year BCR-free rates were comparable for RALP (97.6, 93.4, and 85.1%) and LRP (97.7, 89.7, and 79.7%) at PSA cutoff levels of <0.4, <0.2, and <0.1ng/ml, respectively. There was a significant difference in BCR-free rates between the RALP and LRP groups for patients with organ-confined (pT2) disease at 0.2ng/ml (96.4% vs. 88.7%, P=0.0373) and 0.1ng/ml (91.0% vs. 83.0%, P=0.0470). We report lower morbidity, comparable pathologic outcome and improved mid-term oncologic results in patients with organ-confined disease after RALP in comparison to LRP.