Kidney transplantation or renal transplantation is the transplant of a kidney into a patient with end-stage renal disease. Kidney transplantation is typically classified as deceased-donor (formerly known as cadaveric) or living-donor transplantation depending on the source of the donor organ. Living-donor renal transplants are further characterized as genetically related (living-related) or non-related (living-unrelated) transplants, depending on whether a biological relationship exists between the donor and recipient.
A person receiving a transplant usually receives only one kidney, but, in rare situations, he or she may receive two kidneys from a deceased donor. In most cases, the diseased kidneys are left in place during the transplant procedure. The transplanted kidney is implanted in the lower abdomen on the front side of the body.