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Related Experiment Video

Updated: May 28, 2026

Laparoscopic Anatomical Liver Segment VII Resection with Liver Parenchymal Transection Following a Priority Approach
13:57

Laparoscopic Anatomical Liver Segment VII Resection with Liver Parenchymal Transection Following a Priority Approach

Published on: May 23, 2025

Segmentectomy of the liver.

Hiroshi Yoshida1, Yu Katayose, Toshiki Rikiyama

  • 1Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan. kan-y@surg1.med.tohoku.ac.jp

Journal of Hepato-Biliary-Pancreatic Sciences
|October 6, 2011
PubMed
Summary

Segmentectomy, an anatomical liver resection, is crucial for hepatocellular carcinoma. Techniques vary between left and right liver resections, with ultrasonically guided staining aiding right-sided procedures.

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Area of Science:

  • Hepatobiliary surgery
  • Surgical oncology
  • Liver anatomy

Background:

  • Hepatocellular carcinoma frequently involves the portal vein and shows intrahepatic metastasis.
  • Anatomical resection of cancer-bearing liver segments is desirable for curative treatment.
  • Segmentectomy preserves liver function when extensive resection is not feasible.

Purpose of the Study:

  • To describe the techniques for performing segmentectomy, an anatomical liver resection.
  • To highlight differences in segmentectomy between the left and right hemilivers.
  • To present ultrasonically guided segmental staining as a method for right hemiliver segmentectomy.

Main Methods:

  • Segmentectomy is based on Couinaud's liver segmentation.
  • Left hemiliver segmentectomy (segments 2-4) allows ligation of third-order portal vein branches.

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Last Updated: May 28, 2026

Laparoscopic Anatomical Liver Segment VII Resection with Liver Parenchymal Transection Following a Priority Approach
13:57

Laparoscopic Anatomical Liver Segment VII Resection with Liver Parenchymal Transection Following a Priority Approach

Published on: May 23, 2025

Application of the En Bloc Concept Combined with Anatomic Resection in Laparoscopic Hepatectomy
04:41

Application of the En Bloc Concept Combined with Anatomic Resection in Laparoscopic Hepatectomy

Published on: March 10, 2023

  • Right hemiliver segmentectomy (segments 5-8) utilizes ultrasonically guided segmental staining due to surgical difficulty.

    • Main Results:

    • Ligation of portal vein branches is feasible in left hemiliver segmentectomy.
    • Ultrasonically guided segmental staining facilitates right hemiliver segmentectomy.
    • The described techniques enable precise anatomical liver resections.

    Conclusions:

    • Segmentectomy offers a curative approach for hepatocellular carcinoma while preserving liver function.
    • Techniques for segmentectomy differ significantly between the left and right hemilivers.
    • Ultrasonically guided segmental staining is an effective method for complex right hemiliver segmentectomies.