This medical how-to video details a robotic left aortic lymph node dissection in a patient with endometrial cancer using the Standard da Vinci system. The dissection on the right side of the aorta has been completed and the anatomy is outlined. The dissection on the left side of the aorta is highlighted in this video. Watch and learn how a dissection of a lymph node is performed on a patient. This surgical video is intended for medical students.