Laparoscopic Right Hemicolectomy for a Patient with Transverse Colon Cancer and Crossed Fused Renal Ectopia—A Case Report—

Abstract

The case of a 55-year-old woman who underwent laparoscopic surgery for transverse colon cancer with crossed fused renal ectopia (CFRE), which is a relatively rare renal malformation in which the two kidneys are located on the same side of the body and joined together, is reported. Laboratory examination when the patient visited our hospital with right chest pain showed severe anemia. Computed tomography (CT) and colonoscopy were performed, and she was diagnosed with advanced transverse colon cancer at the hepatic flexure with multiple liver metastases. Palliative laparoscopic right hemicolectomy to control anemia was planned, and a retroperitoneal approach was chosen to avoid injury to the ureters and gonadal vasculature located abnormally because CT also showed CFRE, with both kidneys on the right side of the body. Consequently, the vessels were preserved safely by identifying the ectopic left kidney and retroperitoneal layer first at the caudal side of the duodenum. The patient was discharged without any complications, and chemotherapy was started. Since this is the first case report of successful surgery for right-sided colon cancer with CFRE, further reports are needed. However, the present case suggests that a retroperitoneal approach can be a useful option in right hemicolectomy for patients with CFRE.