Related Experiment Video
Updated: Jan 9, 2026
A Rat Orthotopic Renal Transplantation Model for Renal Allograft Rejection
Published on: February 2, 2022
Transplantation of crossed fused ectopic kidneys into a single recipient
Stephen H Bailey1, Mary C Mone, Edward W Nelson
1Department of Surgery, University of Utah Health Sciences Center, Salt Lake City 84132, USA.
Background:
Crossed renal ectopia is a rare (1 in 1000 live births) congenital anomaly in which both renal masses are located on one side of the abdomen and in 90% of cases are fused. Although this condition is not typically associated with underlying renal pathology or symptoms, complex vascular anatomy is commonly encountered.
Study Design:
A report of the successful transplantation of crossed fused ectopic kidneys as a single allograft.
Results:
With careful attention to the complex anatomy presented by this anomaly, the course of the patient's transplantation and postoperative convalescence were uncomplicated and resulted in excellent longterm graft function. We report the first successful transplantation and longterm function of crossed fused ectopic kidneys as a single allograft.
Conclusions:
Given the shortage of cadaveric renal allografts, patients with this anomalous condition should not be excluded as potential organ donors. Transplant surgeons should have an understanding of this anomaly and its anatomic variants to ensure proper utilization of this limited but valuable resource.
