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Precise knowledge of liver anatomy is recognized as the key to a safe and efficient liver resection passing in the right surgical plan, often following hepatic veins, while preserving sufficient residual parenchyma with adequate regeneration capacity.
Our knowledge of liver anatomy has evolved over centuries through numerous depictions culminating with the breakthrough description of liver segments produced by Claude Couinaud. His work was rapidly adopted and further developed by Japanese surgeons with the aim of gathering more sophisticated descriptive details in order to furt....[more]
Standardization of Anatomic Liver Resection Based on Laennec's Capsule
Atsushi Sugioka, Yutaro Kato, Yoshinao Tanahashi, Jun-ichi Yoshikawa, Gozo Kiguchi, Masayuki Kojima, Akira Yasuda, Sanae Nakajima, Ichiro Uyama
Video ORIGINAL PAPER, Apr 2020
Article DOI: 10.21614/sgo-25-2-57
Read article We proposed a novel comprehensive surgical anatomy of the liver based on Laennec's capsule in 2017, which contributed to the standardization of extrahepatic Glissonean pedicle isolationĂ¢?"the optimal method for Glissonean pedicle isolation without parenchymal destruction.
Thereafter, the scope of our concept included an extension to the hepatic vein and the plate system to establish the surgical technique of the anatomic liver resection that consisted of extrahepatic Glissonean pedicle isolation, exposure of the landmark hepatic vein, and parenchymal reresection to the optimum....[more]
Exploring the Fine-Layer Structure Around a Glissonean Pedicle in Cadaveric Models
Mamoru Morimoto, Yoichi Matsuo, Goro Ueda, Tomokatsu Kato, Yoshinaga Aoyama, Yuichi Hayashi, Kan Omi, Hiroyuki Imafuji, Kenta Saito, Ken Tsuboi, Ryo Ogawa, Hiroki Takahashi, Shuji Takiguchi
Video Surgical Technique, Apr 2020
Article DOI: 10.21614/sgo-25-2-67
Read article Background: Glissonean pedicle isolation is a very useful procedure during a laparoscopic anatomic hepatectomy (LAH); however, few studies have reported the precise layer structure around a Glissonean pedicle.
The aim of this study was to evaluate the layer structure around a Glissonean pedicle in cadaveric models and determine whether Glissonean pedicle isolation based on the layer structure can serve as a standard surgical procedure during a LAH.

Methods: From April 2017 to December 2019, LAHs were performed in 59 patients. Prior to the LAH, a cadaveri....[more]
Histology of the Laennec's Capsule Around the Hepatic Veins and How it May Guide Approaches to Laparoscopic Anatomic Lliver Resectio....
Kazuteru Monden, Kyotaro Ohno, Hiroshi Sadamori, Masayoshi Hioki, Satoshi Ohno, Norihisa Takakura, Atsushi Sugioka
Video Surgical Technique, Apr 2020
Article DOI: 10.21614/sgo-25-2-73
Read article Laennec's capsule is a proper membrane of the liver, first described by Rene T. H. Laennec in 1802, covering not only the entire surface of the liver but also the intrahepatic parenchyma surrounding the Glissonean pedicles and the hepatic veins (HVs).
It is an essential structure for establishing liver resection, especially anatomic liver resection, which involves the isolation of the extrahepatic Glissonean pedicles and the exposure of the main HVs. Regarding the location of the capsule, Laennec and Couinaud described it as adjacent to the confluence of the main HVs.
Standardization of Laparoscopic Left Hemihepatectomy by Extrahepatic Glissonean Pedicle Isolation and HV Root - At First One-way Res....
Yutaro Kato, Atsushi Sugioka, Yoshinao Tanahashi, Gozo Kiguchi, Masayuki Kojima, Sanae Nakajima, Akira Yasuda, Jun-ichi Yoshikawa, Ichiro Uyama
Video Surgical Technique, Apr 2020
Article DOI: 10.21614/sgo-25-2-78
Read article Laparoscopic left hemihepatectomy (LLH) is one of the major hepatectomy procedures and its surgical techniques are not well standardized. According to our surgical strategies for anatomic liver resections, which are composed of the extrahepatic Glissonean pedicle approach (GPA) and hepatic vein (HV) root-at first one-way parenchymal dissection, we have standardized the surgical techniques for LLH.
Both approaches are based on the anatomical background of Laennec's capsule. The right and left sides of the root of the Glissonean pedicle including the umbilical portion of the porta....[more]
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Surgery, Gastroenterology and Oncology is indexed in Scopus, CrossRef (DOI: 10.21614/sgo)

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