Inclusion Criteria:  Age ≥ 18 years Able to give informed consent Histologically proven high risk prostate cancer or intermediate risk cancer (≥5% risk of nodal involvement on Briganti 2012 nomogram) according to European Association od Urology (EAU) risk groups Suitable for minimally-invasive surgery  Exclusion Criteria:  Previous pelvic surgery or irradiation. Any type of clotting disorder. Patients unwilling to undergo CT scan Kidney failure, Hemodialysis American Society of Anesthesiology Classification> 3 Existing contraindications for performing a lymph node dissection