What is a transurethral prostatectomy?

No it is not. A robotic prostatectomy is better at treating the early stages of prostate cancer. Learn more at http://www.harleystreeturology.com/the_prostate/treatments/robotic_prostatectomy.php

A prostatectomy is the surgical removal of a man's prostate and the diseased seminal vesticles, if the cancer has spread outside of the prostate; otherwise only the full prostrate will be removed.

It is a procedure to remove the prostatic overgrowth through a different surgical route

The procedure is performed by a urological surgeon

A small roller ball is used to break up and vaporize the obstructing prostatic tissue, rather than cutting it away as in standard TUR