Water Vapor Thermal Therapy Versus Ejaculation-Sparing Bipolar Transurethral Enucleation for Benign Prostatic Hyperplasia

Inclusion Criteria: * Male patients aged 50 years or older. * Symptomatic benign prostatic hyperplasia with moderate-to-severe lower urinary tract symptoms. * International Prostate Symptom Score (IPSS) 13 or higher. * Prostate volume 30 to 80 mL measured by transrectal ultrasound. * Maximum urinary flow rate (Qmax) 15 mL/s or less with voided volume 150 mL or more. * Post-void residual urine volume 250 mL or less. * Failed, intolerant, or unwilling to continue medical therapy for benign prostatic hyperplasia. * Sexually active within the previous 3 months. * Preserved antegrade ejaculation at baseline. * Patient wishes to preserve ejaculation. * Ability to complete the International Prostate Symptom Score (IPSS), International Index of Erectile Function-5 (IIEF-5), and Male Sexual Health Questionnaire-Ejaculatory Dysfunction Short Form (MSHQ-EjD-SF). * Written informed consent. Exclusion Criteria: * Suspected or confirmed prostate cancer. * Abnormal prostate-specific antigen or digital rectal examination suspicious for malignancy unless prostate cancer has been excluded according to standard clinical practice. * Previous prostate surgery. * Previous urethral surgery likely to affect instrumentation or study outcomes. * Urethral stricture disease. * Neurogenic bladder dysfunction. * Active urinary tract infection until adequately treated. * Bladder stones requiring concomitant surgery. * Prostate volume less than 30 mL or more than 80 mL. * Baseline anejaculation or severe ejaculatory dysfunction. * No sexual activity during the previous 3 months. * Chronic indwelling urethral or suprapubic catheter. * Recurrent urinary retention or suspected detrusor underactivity requiring urodynamic clarification. * Post-void residual urine volume more than 250 mL. * Uncontrolled coagulopathy. * Anticoagulation or antiplatelet therapy that cannot be safely managed perioperatively. * Unfitness for anesthesia or intervention. * Inability or unwillingness to comply with follow-up.