To summarize the experience and technical points of the robotic target-territory resection techniques for liver tumors target resection technology under the guided by the watershed theory.

A retrospective analysis was performed for the data of 62 patients in the author′s team who underwent robotic target-territory resection of liver tumors from Oct. 2021 to Dec. 2022. target-territory analysis was carried out before surgery, the target-territory resection extent based on the biological characteristics of the tumor, and the resection was performed according to individual anatomical markers during surgery.

All 62 patients successfully completed the operation, including 3 cases of left hemiliver plus caudate lobectomy, 1 case of right liver plus caudate lobec, 12 cases of left liver tumor resection, 7 cases of middle liver tumor resection, 35 cases of right liver tumor resection, 4 cases of caudate lobe tumor resection, and no laparotomy. The duration of surgery and the median intraoperative bleeding were 188 min(70-510 min) and 50 mL(5-1 100 mL), Intraoperative hemorrhage (≥800 mL) was 2 cases. There were 2 cases of bile duct leakage after surgery, both of which were cured without surgical treatment. The median length of hospital stay after surgery was 7 d(3-28 d). There were no secondary surgeries or deaths.

Target-territory resection technology of liver tumor is safe and feasible. It is based on the biological characteristics of tumor, and individualized anatomic landmarks play an important role. The comprehensive application of surgical robots and various technologies will help the implementation of target-territory resection.