“…This approach is especially relevant in pediatric urologic operations of the upper urinary tract [7,8]. MIS also plays a certain role in pediatric surgical oncology although the exact relevance in most entities has not yet been determined [9][10][11]. The use of MIS in patients suffering from WT has been reported in singular cases [12][13][14], however, a systematic analysis has not been undertaken so far and by now there are no evidence based data available.…”