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Updated: Jun 18, 2026

Heterotopic Renal Autotransplantation in a Porcine Model: A Step-by-Step Protocol
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Heterotopic Renal Autotransplantation in a Porcine Model: A Step-by-Step Protocol

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Transumbilical single-port laparoscopic partial nephrectomy in a pig model.

Ugur Boylu1, Mathew Oommen, Raju Thomas

  • 1Department of Urology, Tulane University School of Medicine, New Orleans, LA, USA. ugur@ugurboylu.com

BJU International
|November 17, 2009
PubMed
Summary

Single-port laparoscopic partial nephrectomy (SPLPN) is feasible in pigs, demonstrating a learning curve for instrumentation and technique. Further optimization is needed to reduce ischemia time and enhance this minimally invasive surgical approach.

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Area of Science:

  • Urology
  • Minimally Invasive Surgery
  • Surgical Innovation

Background:

  • Partial nephrectomy is a standard treatment for small renal masses.
  • Single-port laparoscopic surgery offers potential benefits in reduced invasiveness.
  • Evaluating novel techniques in animal models is crucial for clinical translation.

Purpose of the Study:

  • To assess the feasibility of single-port laparoscopic partial nephrectomy (SPLPN).
  • To evaluate the necessary instrumentation for SPLPN.
  • To understand the learning curve associated with SPLPN in a porcine model.

Main Methods:

  • Ten transumbilical SPLPN procedures were performed in pigs.
  • Utilized a multi-instrument port, flexible laparoscope, and custom articulating instruments.

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Technique of Porcine Liver Procurement and Orthotopic Transplantation using an Active Porto-Caval Shunt
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Technique of Porcine Liver Procurement and Orthotopic Transplantation using an Active Porto-Caval Shunt
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  • Standardized steps included port placement, hilar dissection, renal mass excision, and reconstruction.

    • Main Results:

    • A fascial incision of at least 2.5 cm is recommended for adequate instrument access.
    • Mean operative times for hilar dissection and total excision were 12.2 and 9.8 minutes, respectively.
    • Total ischemia time decreased significantly from 50 minutes in the first case to 27 minutes in the last (mean 37.4 minutes), with a mean estimated blood loss of 81.1 mL.

    Conclusions:

    • Single-port laparoscopic partial nephrectomy is technically feasible in a porcine model.
    • Specialized instrumentation, including articulating instruments, is essential for successful execution.
    • Further refinement of techniques and instrumentation is required to optimize the procedure and reduce ischemia time.