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Updated: Jul 13, 2026

A Mouse Model of the Associating Liver Partition and Portal Vein Ligation for Staged Hepatectomy Procedure Aided by Microscopy

A Mouse Model of the Associating Liver Partition and Portal Vein Ligation for Staged Hepatectomy Procedure Aided by Microscopy

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A suitable animal model for laparoscopic hepatic resection training.

Swee H Teh¹, John G Hunter, Brett C Sheppard

¹Department of Surgery, Oregon Health & Science University, Portland, OR, USA.

Surgical Endoscopy

|August 21, 2007

Summary

Sheep liver anatomy closely mimics human anatomy, making it an ideal model for laparoscopic hepatic resection training. This study confirms sheep as a valuable tool for surgeons learning advanced laparoscopic liver surgery.

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Area of Science:

Surgical anatomy
Minimally invasive surgery
Comparative anatomy

Background:

Growing interest in laparoscopic hepatic resection.
Lack of structured training due to absence of ideal animal models.
Need for an animal model with human-like liver anatomy for training.

Purpose of the Study:

Identify an animal model with human-like liver anatomy.
Assess feasibility of laparoscopic hepatic inflow/outflow dissection and parenchyma transection in this model.

Main Methods:

Surgical dissection and contrast studies to map sheep liver inflow/outflow structures.
Performance of laparoscopic left major hepatic resections on sheep.

Main Results:

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Extended 78% Hepatectomy in a Mouse Surgical Model

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Last Updated: Jul 13, 2026

A Mouse Model of the Associating Liver Partition and Portal Vein Ligation for Staged Hepatectomy Procedure Aided by Microscopy

A Mouse Model of the Associating Liver Partition and Portal Vein Ligation for Staged Hepatectomy Procedure Aided by Microscopy

Published on: January 19, 2024

Extended 78% Hepatectomy in a Mouse Surgical Model

Extended 78% Hepatectomy in a Mouse Surgical Model

Published on: May 24, 2024

Sheep liver portal hepatis anatomy closely resembles human liver anatomy.

Detailed description of sheep liver vascular and biliary structures provided.

Successful laparoscopic left hepatic lobe resection achieved with anatomical accuracy and preservation of the middle hepatic vein.

Conclusions:

Sheep liver surgical anatomy is highly similar to human liver anatomy.
Laparoscopic major hepatic resection can be accurately performed using sheep as a model.
Sheep is an ideal animal for advanced laparoscopic hepatic resection training.