Focal therapy allows for preservation of sexual function in 90-95% of prostate cancer patients Published on 02/12/2020 The results of this treatment in young patients, with localized, well-defined, low-risk tumors are very satisfactory. Da Vinci robotic assisted surgery, indicated in patients with more advanced tumors, also offers better results in terms of sexual function than laparoscopy or open surgery, where erectile dysfunction rates can reach 80-90%