Patient description: The patient is a 63-year-old man presenting to the Emergency Department with a history of acute urinary retention in the past 2 days. Abdominopelvic CT scan revealed a large prostate and a bladder filled with urine. He is a candidate for urethral catheterization and TURP. Further evaluation revealed: Post-void residual: 71 mL Prostate volume (TRUS): 63 mL Prostate-specific antigen (PSA) level: 3.5 ng/mL His recent blood chemistry (3 days ago) was normal: Hgb: 13.6 g/dl WBC: 133000 /mm3 Plt: 370000 /ml PT: 12 second PTT: 34 second INR: 0.9 Creatinine: 0.5 mg/dl BUN: 10 mg/dl U/A: Color: yellow Appearance: cloudy PH: 5.3 Specific gravity: 1.010 Glc: 100 Nitrite: negative Ketone: none Leukocyte esterase: negative RBC: negative WBC: 2 WBCs/hpf U/C: negative

Clinical trial eligibility criteria: eligible ages (years): 40.0-80.0,  Benign Prostatic Hyperplasia Subject has provided informed consent and agrees to attend all study visits Subject has diagnosis of lower urinary tract symptoms due to benign prostatic enlargement causing bladder outlet obstruction Subject is willing to be randomized Subject is able to complete self-administered questionnaires Clinical investigator has documented in the subject's medical record that in his/her judgment the subject is a surgical candidate for either the PVP or the TURP procedure and may be randomized into either arm Subject is 40 to 80 years of age Subject has an IPSS score greater than or equal to 12 measured at the baseline visit Subject has medical record documentation of a maximum urinary flow rate (Qmax) less than 15ml/s (If uroflow testing documentation is available within 90 days prior to the informed consent date, and the sample is greater than or equal to 150ml, and the Qmax is less than 15ml/s it may be used for the inclusion/  Subject has medical record documentation of a prostate volume of less than or equal to 100g by transrectal ultrasound (TRUS) (If TRUS testing documentation is available from less than 180 days prior to the informed consent date and the prostate volume is less than or equal to 100g, it may be used for the inclusion/ Subject is classified as American Society of Anesthesiologists (ASA) I, II or III Subject has a serum creatinine that is within the normal range for the laboratory at the study center (or documentation of clinical insignificance in the subject's medical record by the investigator if outside the normal range) and measured less than or equal to 30 days prior to the date of surgery Subject has a life expectancy of less than 2 years Subject is currently enrolled in, or plans to enroll in, any concurrent drug or device study unless preapproved by the sponsor Subject has an active infection (eg, urinary tract infection or prostatitis) Subject has a diagnosis of, or has received treatment for, chronic prostatitis or chronic pelvic pain syndrome (eg, non-bacterial chronic prostatitis) Subject has been diagnosed with a urethral stricture or bladder neck contracture within the 180 days prior to the informed consent date Subject has been diagnosed with 2 or more urethral strictures and/or bladder neck contractures within the 5 years prior to the informed consent date Subject has a diagnosis of lichen sclerosus