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Updated: Jan 12, 2026

Laparoscopic Anatomical Right Hemihepatectomy via the In Situ Anterior Approach
Published on: August 8, 2025
Retroperitoneal Laparoscopic Right Heminephrectomy for Renal Cell Carcinoma in a Horseshoe Kidney
Yusuke Andoh1,2, Atsuhiko Ochi1, Hidetsugu Takahashi1,2
1Department of Urology Kameda Medical Center Kamogawa Chiba Japan.
Introduction:
Laparoscopic heminephrectomy for renal cell carcinoma in horseshoe kidneys has been previously reported, but reports on the retroperitoneal approach remain limited. This paper presents a case demonstrating the feasibility and effectiveness of this surgical technique.
Case Presentation:
A 74-year-old woman was diagnosed with two renal cell carcinomas in the right side of a horseshoe kidney in contrast-enhanced computed tomography. A laparoscopic right heminephrectomy was performed using a retroperitoneal approach. This approach allowed for effective management of the complex vasculature supplying the isthmus. Additionally, the inferior mesenteric artery served as a reliable anatomical landmark, facilitating the identification of the optimal site for isthmus transection.
Conclusion:
Retroperitoneoscopic heminephrectomy is a safe and effective surgical option for renal cell carcinoma in patients with horseshoe kidneys and represents an anatomically rational approach.

