While many minimally invasive approaches to open procedures have been applied without randomized trials proving their efficacy (splenectomy, hepatectomy, pancreatectomy, partial gastrectomy, to name a few), the investigators believe it is prudent when adopting a new approach for a cancer operation to study it in a prospective fashion. This is the only trial of its kind and the investigators are one of only a few centers in the world that has the minimally invasive knowledge and expertise and the volume of urologic and melanoma patients to have the potential to perform such a trial. It is incumbent upon us to complete this study.