Objective: the potential of a new continuous-wave 70-W, 2.013-mm thuliumdoped yttrium aluminium garnet (Tm: YAG) laser for the endoscopic treatment of benign prostatic hyperplasia (BPH) is investigated Methods: we retrospectively evaluated 25 BPH patients who were treated by thulium laser prostatectomy of the prostate in our institution between April and October 2009.Two surgical techniques were used: vaporesection (for prostate size below 50g) and enucleation (for prostate size above 50g).