Related Experiment Video
Updated: Feb 5, 2026

Robot-Assisted Kidney Transplantation
Published on: July 19, 2021
Successful Kidney Transplantation in a Patient with Unipapillary Kidney
Akihiro Kosoku1, Junji Uchida2, Hisao Shimada1
1Department of Urology, Osaka City University Graduate School of Medicine, Osaka, Japan.
Abstract:
A unipapillary kidney is a very rare anomaly in humans. In this paper, we report on a case of a 47-year-old woman with end-stage kidney disease (ESKD) due to unipapillary kidney, who had been on hemodialysis for 20 years and who had successfully received deceased-donor kidney transplantation. The aim of this report is to present a case of a rare unipapillary kidney patient who underwent kidney transplantation without any urological complications. Our results suggest that kidney transplantation may be an effective renal replacement therapy for patients with ESKD due to unipapillary kidney.
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External Anatomy of the Kidney
The kidneys are located in the retroperitoneal space on either side of the vertebral column, protected posteriorly by the 11th and 12th ribs. The right kidney sits slightly lower than the left owing to the presence of the liver...
Internal Anatomy of the Kidney
Anatomical Position and Dimensions
The kidneys are retroperitoneal organs positioned against the posterior abdominal wall on either side of the spine, roughly between the twelfth thoracic and third lumbar vertebrae. Each kidney is typically 10-12 cm long, 5-6 cm wide, and 3-4 cm thick, weighing about 150 grams.
Renal Cortex
The outermost region of the kidney is the...

