In the study patients will be randomized between the use of a surgical navigation system or not. The operation itself will be performed according to current clinical practice, and the navigation system will be used for better localization and orientation during the procedure.
Image-guided navigation surgery allows for full utilization of pre-operative imaging during surgery, and has the potential of reducing both irradical resections and morbidity. In this study we will randomize patients which will undergo an abdominal lymph node dissection in order to evaluate the actual technical and clinical benefit of navigation