Objectives: To compare the clinicopathologic data of 286 laparoscopic radical prostatectomies (LRPs) and 714 open radical prostatectomies (RRPs) performed at the Massachusetts General Hospital from 2001 to 2005.
Methods: A total of 1000 radical prostatectomy procedures were analyzed for prostate weight, pathologic stage, Gleason score, surgical margin status, and positive margin location.
Results: The mean patient age was 58.6 and 59.1 years for the LRP and RRP groups, respectively. The mean preoperative prostate-specific antigen level was 5.96 and 6.00 ng/mL, respectively. Clinical Stage T1c cancer was seen in 86.4% of the LRP and 90.5% of the RRP patients. Gleason score 7 or less disease was seen on biopsy in 97.5% of the LRP and 96.9% of the RRP patients. The average prostate weight was 46.8 g for LRP and 46.0 g for RRP. In the radical prostatectomy specimens, 94.4% of LRP and 93.3% of RRP patients had Gleason score 7 or less disease and 86.0% of LRP and 81.7% of RRP patients had pathologic Stage pT2 cancer. The rate of positive surgical margins was 15.0% and 17.4% for the LRP and RRP groups, respectively. The positive margins occurred mainly at the peripheral and apical regions in both groups. No significant difference was found in the preoperative variables or final pathologic findings between the two surgical groups.
Conclusions: With similar case selection, LRP and RRP achieve similar pathologic outcomes.
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