Holmium Laser Versus Thulium Laser Versus Bipolar Enucleation of the Prostate.

Inclusion Criteria: * Patients' age \>50 years * Lower urinary tract symptoms LUTS secondary benigh prostatic obstruction BPO who failed medical treatment * International prostate symptom scores (IPSS) \>15 and bother score quality of life (QOL) \> 3 (according to IPSS question 8) * Maximum urinary flow rate (Q max) \<15 ml/sec with at least 150 ml voided volume or cases with acute urine retention secondary to BPO who failed trial of voiding on medical treatment. * Transrectal ultrasound TRUS estimated total prostate size 80-250cc Exclusion Criteria: * Patient with neurological disorder which might affect bladder function as cerebrovascular stroke, Parkinson disease * Active urinary tract infection (positive urine culture) till treatment * Presence of bladder cancer (within the last 2 years) * Known prostate cancer patients will be excluded preoperatively on the basis of digital rectal examination, prostate specific antigen level, and TRUS imaging followed by prostate biopsies if necessary.