Validation of Radioisotope Guided Lymphadenectomy for Loco-regional Staging in Patients With Intermediate or High-risk Prostate Cancer

Inclusion Criteria: * Subject man, whose age is greater than or equal to 18 years * Carrier of cancer intermediate risk non-metastatic prostate or high relapse * Subject with an initial balance sheet expansion, regional and general negative by Scanner, abdominopelvic MRI or bone scan, * Subject has undergone a medical examination in connection with the study, * Topic for which a radical prostatectomy is considered curative purposes, * Supported by Subject surgical teams involved in the study, * Topic affiliated to a social security scheme, * Subject who signed informed consent. Exclusion Criteria: * Subject man, whose age is less than 18 years * Subject who have received hormone therapy or radiation therapy for prostate cancer * Subject who had surgery for prostate adenoma (transurethral resection or open surgery) because of potential difficulties injection of radioactive tracer in the gland, * Subject has a history of pelvic surgery or radiotherapy, * Subject with inguinal hernia repair history of laparoscopic, * Subject refusing blood transfusions, * Subject is not agreeing to participate in this study and did not sign the informed consent.