Abstract
The anatomic features of a horseshoe kidney are unique-the kidney is fixed and poorly mobile, with many arterial and venous blood supplies, thereby complicating minimally invasive surgery for renal cancer in this setting. Several reports have described robot-assisted partial nephrectomy (RAPN) to treat renal cancer in a horseshoe kidney, but no reports of RAPN for renal cancer in the isthmus of a horseshoe kidney have been published to date. This case report describes the technique and usefulness of RAPN for treatment of renal cancer located in the isthmus of a horseshoe kidney.