Operative Details and Oncological and Functional Outcome of Robotic-Assisted Laparoscopic Radical Prostatectomy: 400 Cases with a Minimum of 12 Months Follow-up

BackgroundRobotic-assisted laparoscopic radical prostatectomy (RALP) using the da Vinci® surgical system (Intuitive Surgical, Sunnyvale, CA) is increasingly used for the management of localised prostate cancer.ObjectiveWe report the operative details and short-term oncological and functional outcome of the first 400 RALPs performed at our unit.Design, setting and participantsFrom December 2003 to August 2006, 400 consecutive patients underwent RALP at our institution. A prospective database was established to record the relevant details of all RALP cases.Surgical procedureA six port transperitoneal approach using a 4-arm da Vinci® system was used to perform RALP. This database was reviewed to establish the operative details and oncological and functional outcome of all patients with a minimum of 12 months follow-up.MeasurementsPerioperative characteristics and outcomes are reported. Functional outcome was assessed using continence and erectile function questionnaires. Biochemical recurrence (prostate-specific antigen (PSA) ≥0.2 ng/mL) is used as a surrogate for cancer control.Results and limitationsThe mean age ± standard deviation (SD) was 60.2 ± 6 years. Median PSA level was 7.0 (interquartile range (IQR) 5.3–9.6) ng/mL. The mean operating time ± SD was 186 ± 49 mins. The complication rate was 15.75% comprising Clavien grade I-II and Clavien grade III complications in 10.5% and 5.25% of patients respectively.The overall positive surgical margin rate was 19.2% with T2 and T3 positive margin rates of 9.6% and 42.3% respectively. The biochemical recurrence-free survival was 86.6% at a median follow-up of 22 (IQR = 15–30) months. At 12 months follow-up, 91.4% of patients were pad-free or used a security liner. Of those men previously potent (defined as Sexual Health Inventory for Men [SHIM] score ≥21) who underwent nerve-sparing RALP, 62% were potent at 12 months.ConclusionsThe safety and feasibility of RALP has already been established. Our initial experience with this procedure shows promising short-term outcomes.