partial nephrectomy offers lower renal function impairment and equivalent oncological survival outcomes compared with radical nephrectomy in those with T1 tumors. As urology has embraced the gradual shift from open to minimally invasive surgery (MIS), PN is being completed more often by laparoscopic and robotic methods . The first laparoscopic transperitoneal partial nephrectomy was reported in 1993 by Winfield, with the retroperitoneal approach introduced 1 year later With advancing robotic technology and the development of the DaVinci system, urologists began to explore the realm of robotic-assisted urologic surgery. In 2004, Gettman et al. published a paper describing their experience with robotic-assisted laparoscopic partial nephrectomy. Moreover, robotic assisted partial nephrectomy (RAPN) and laparoscopic partial nephrectomy (LPN) seems to be significantly better than OPN in terms of perioperative complications, estimated blood loss and hospital stay. Conversely, transfusion rate, ischemia time, change in estimated glomerular filtration rate and early cancer outcomes are similar between the two approaches. International guidelines recommend the use of both approaches according to the surgeon and patient preferences. so, we are plaining to do the study comparing between RAPN and LPN regarding feasibility and ability of both techniques.