Comparison of Functional Outcomes of Ejaculation-preserving Partial Trans Urethral Resection of the Prostate With Complete Trans Urethral Resection of the Prostate for Benign Prostatic Obstruction

Inclusion Criteria: * Man over 40 years old * Indication of surgical management for BPH * Prostate volume ≥30 cc and ≤150 cc as evaluated by ultrasonography ( or an MRI if available) * IPSS score ≥12 * Qmax ≤15 ml/s * Affiliated to French national social security system * wish and be able to comply with planned visits * Able to express his consent * Signed informed consent form Exclusion Criteria: * Unwillingness to accept the treatment * No pre-operative ejaculation or sexuality * Neurological pathology responsible for micturition disorders * History of prostatic surgery * Stenosis of the urethra symptomatic * History of prostate cancer * History of radiotherapy or pelvic surgery * Patient refusing the principle of partial surgery * Life expectancy \<3 years * Inability to understand the informed consent document, to give consent voluntarily or to complete the study tasks. * Participation in another clinical study involving an investigational product within 1 month before study entry.