Nephrectomy is a surgical procedure in which one or more kidneys are removed from the body. This procedure is typically performed to treat kidney cancer, severe kidney damage or disease, or to donate a kidney for transplantation. Nephrectomies can be done using various techniques, including open surgery, laparoscopic surgery, or robotic-assisted surgery. The recovery time and outcome of nephrectomy vary depending on the specific circumstances and the patient's overall health.