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Laparoscopic Anatomical S7 Segmentectomy: A Standardized Combined Dorsal and Ventral Method
Wuqiang Chen1, Yingjian Hou1,2, Yuan Jiang1,2
1Department of Hepatobiliary Surgery, Affiliated Hospital of Jiangnan University, Jiangnan University, Wuxi, China.
Digestive Surgery
|January 15, 2026
Summary
A new dorsal and dorsoventral approach simplifies laparoscopic liver segment S7 resection. This standardized method reduces technical difficulty, making complex liver surgery more accessible for surgeons.
Area of Science:
- Hepatobiliary Surgery
- Minimally Invasive Surgery
- Surgical Oncology
Background:
- Laparoscopic liver segment S7 resection is technically demanding due to deep location and complex vasculature.
- This complexity presents a significant learning curve for surgeons new to the procedure.
Purpose of the Study:
- To present a simple and feasible dorsal approach combined with a dorsoventral method for laparoscopic liver segment S7 resection.
- To standardize the procedure and reduce technical barriers for surgeons.
Main Methods:
- The technique involves systematic dissection of the S7 hepatic pedicle via Rouviere sulcus.
- Parenchymal transection is guided by the dorsal ischemic demarcation line of segment S7.
- The approach progresses along the right hepatic vein toward the ventral aspect of segment S7 in three standardized steps.
Main Results:
- All surgeries were completed successfully without conversion to open procedures or mortality.
- All patients achieved R0 resection, indicating complete tumor removal.
- The average operation time was 190 minutes, with an average blood loss of 200 mL.
Conclusions:
- This standardized dorsal and dorsoventral approach simplifies laparoscopic S7 segment resection.
- The method ensures precise tumor removal while aiming to shorten the learning curve for surgeons.
