Laparoscopic Anatomic S7+S8d Resection Preserving Inferior Right Hepatic Vein and S6 with Right Hepatic Vein...

Area of Science:

• Hepatobiliary Surgery
• Surgical Oncology
• Anatomical Liver Resection

Background:

• Conventional right hepatectomy for tumors in segments S7 and S8 is challenging due to complex anatomy.
• Risks include hemorrhage, injury to adjacent segments, and incomplete tumor removal.

Purpose of the Study:

• To introduce and evaluate an anatomical resection of segments S7 and S8d with S6 preservation using the Laennec's capsule approach.
• To address tumors involving the right hepatic vein (RHV) and segment S6.

Main Methods:

• Integration of membrane anatomy theory with hepatic vein control techniques.
• Utilizing Laennec's capsule to establish a dissectible plane for precise RHV transection.
• Anatomical resection of segments S7 and S8d while preserving segment S6.

Main Results:

• The Laennec's capsule approach facilitates precise RHV transection and management of critical structures.
• The method offers a balance between oncological radicality and functional preservation.
• Demonstrated benefits for high-risk patients needing maximal parenchymal sparing.

Conclusions:

• The anatomical resection via Laennec's capsule provides a safe and effective framework for dorsally located right-liver tumors.
• This technique optimizes surgical pathways and critical structure management in complex liver resections.
• It offers advantages in oncological control and parenchymal sparing for challenging cases.