Open vs Robotic Assisted Partial Nephrectomy

Inclusion Criteria: * Age 18 years or older * Patient with a renal tumor that is a candidate for OPEN surgery and robotic assisted surgery (RAS) partial nephrectomy (PN) * R.E.N.A.L. score ≥ 7 * eGFR ≥ 50 ml/min/1.73 m² * Anticoagulation is accepted according to the surgeon's practice Exclusion Criteria: * Solitary kidney or functionally solitary kidney * Prior surgery at the affected kidney excluding endoscopic kidney stone surgery * Bilateral tumors * Multiple renal tumors requiring excision * Renal vein tumor thrombus * Likely insufficient volume of remaining parenchyma after partial nephrectomy to maintain viable kidney remnant * Metastatic disease with life expectancy of less than 1 year * Pregnancy or suspected pregnancy * Planned concomitant procedure * Subject who is unable or unwilling to comply with the protocol requirements * Subject considered to be from a vulnerable population according to IS0 14155:2011