Prospective Controlled Randomized Study of PAE vs TURP for BPH Treatment.

Inclusion Criteria: Patients evaluated in the Urology Service because of BPH, candidate to TURP. * Signed informed consent * Lower urinary tract symptoms (LUTS) secondary to BPH for at least 6 months prior to study AND/OR baseline IPSS Score \> 13 AND/OR acute urinary retention with impossibility to remove urinary catheter AND/OR BPH symptoms refractory to medical treatment or for whom medication is contraindicated, not tolerated or refused Prostate size of at least 50 grams measured by MRI * Patient must meet ONE of the following criteria: 1. Baseline Prostate Specific Antigen (PSA) \<4 ng/mL (no prostate biopsy required) 2. Baseline PSA \>4 ng/mL and ≤10 ng/mL AND free PSA \> 15% of total PSA (no prostate biopsy required) 3. Baseline PSA \>4 ng/mL and ≤10 ng/mL AND free PSA \<15% of total PSA AND a negative prostate biopsy result (minimum 12 core biopsy) 4. Baseline PSA \>10 ng/mL AND a negative prostate biopsy (minimum 12 core biopsy) Exclusion Criteria: * Active urinary tract infection * Patients with cystoscopy findings suspicious for bladder cancer must undergo biopsy and have a negative histopathology report to be enrolled in the study * Biopsy proven prostate or bladder cancer * The following patients must undergo prostate biopsy with a minimum of 12 cores and have a negative histopathology report to be enrolled in the study: * Patients with digital rectal examination (DRE) findings suspicious for prostate cancer * Patients with baseline PSA levels \> 10 ng/mL * Patients with baseline PSA levels \>4 ng/mL and \< 10 ng/mL AND free PSA \< 15% of total PSA * Bladder atonia, neurogenic bladder disorder or other neurological disorder that is impacting bladder function (eg multiple sclerosis, Parkinson's disease, spinal cord injuries, etc) * Urethral stricture, bladder neck contracture, sphincter abnormalities, urinary obstruction due to causes other than BPH, or other potentially confounding bladder or urethral disease or condition * Allergy to iodinated contrast agents * Hypersensitivity to gelatin products * Previous non-medical BPH treatment, including surgery, TURP, needle ablation, microwave or laser therapy, balloon dilation, stent implantation, or any other invasive treatment to the prostate * Known major iliac arterial occlusive disease or any known condition that catheterization of the prostatic arteries or is a contraindication to embolization, as vasospasm, anatomical variations that imply a risk of embolization, bleeding, prostatic arteries diameter inferior to microcatheter profile, pelvic inflammatory disease * Contraindication to magnetic resonance imaging * History of prostatitis in the last 5 years, not totally controlled with medical treatment * History of pelvic irradiation or radical pelvic surgery * Coagulation disturbances not normalized by medical treatment