Inclusion Criteria:  Men aged 18 years or more and less than 80 years, Prostate volume 30-80 cc inclusive Patient who has failed medical treatment for his prostate adenoma, Indication for prostate enucleation (HOLEP or PLASMA) Patient who was informed of the study and did not object  Exclusion Criteria:  Patient with a diagnosis of prostate cancer, Patient requiring monopolar or bipolar endoscopic resection, Patient under legal protection