The significance of histological analysis following laser transurethral resection of the prostate.

PURPOSE

Monopolar transurethral resection of the prostate is the gold standard for the treatment of benign prostatic hyperplasia. However, due to the associated risks of bleeding and TUR syndrome, laser prostate surgery is gaining popularity. We perform thulium-laser vaporesection of the prostate (TmLRP), where histological samples are generated in every case. We determined postoperative incidence and significance of prostate cancer detection, by retrospective histological examination of our cases.

METHODOLOGY

Between October 2006 and August 2012, 223 patients underwent TmLRP by a single surgeon in our institution. With a background of a benign DRE, and no suspicion of CaP, histological results were studied.

RESULTS

Mean age was 71 years (range 46-91), mean PSA was 4.1 ng/mL (range 0.1-20). 4.9% (11/223) had cancer prostate (CaP) diagnosed, with mean PSA of 6.9 ng/mL (range 0.7-14). Of these: 91% (10/11) had pT1b disease while 9% (1/11) had pT1a disease. Gleason score was 6 in 28% (3/11); 7 in 36% (4/11); 8 in 18% (2/11); 9 in and 18% (2/11).

CONCLUSION

4.9% of patients had unexpected CaP, with significant disease in 4.4% (pT1b) and 3.6% (Gleason score ≥7). Hence, patients should be advised of the small risk of missing significant unsuspected CaP after laser prostatectomy.