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Study of the Intersegmental Veins Between S5 and S8 Based on 3D Reconstruction
Hang Li1, Zili Shao1, Zebing Song1
1Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Guangzhou Medical University, No. 250, Changgang Road, Guangzhou, 510260, China.
Intersegmental veins (IVs) between liver segments 5 and 8 can serve as reliable anatomical landmarks for hepatocellular carcinoma surgery. Identifying these IVs and their junctions with hepatic veins aids surgical navigation and planning.
Area of Science:
- Hepatobiliary surgery
- Surgical anatomy
- Medical imaging
Background:
- Anatomic resection (AR) is a key treatment for hepatocellular carcinoma.
- Identifying intersegmental planes between liver segments 5 (S5) and 8 (S8) is surgically challenging.
- This study sought to identify intersegmental veins (IVs) as landmarks between S5 and S8.
Purpose of the Study:
- To identify reliable intersegmental veins (IVs) between liver segments 5 and 8.
- To utilize 3D reconstruction analysis for visualizing these IVs.
- To establish IVs as anatomical landmarks for hepatocellular carcinoma surgery.
Main Methods:
- Retrospective analysis of 57 patients' CT scans (Sept 2021-Jan 2023).
- 3D reconstruction of portal vein watersheds and hepatic veins.
- Analysis of IVs between S5 and S8, including their types and junctions with middle hepatic veins (MHVs).
Main Results:
- Intersegmental veins (IVs) were identified in 75.4% of patients.
- Most patients had a single IV joining the MHV (81.4%).
- IV-MHV junctions were predominantly in the lower MHV, identifiable below the second hepatic portal's midpoint.
Conclusions:
- Intersegmental veins (IVs) between S5 and S8 are potential anatomical landmarks for hepatocellular carcinoma AR.
- Insights into IV-MHV junction locations aid surgical navigation.
- Preoperative 3D reconstruction and personalized planning are vital due to anatomical variations.
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