The level of pancreatic neck transection during laparoscopic pancreaticoduodenectomy (LPD) is not conclusive. Theoretically, the level of pancreatic transection can significantly affect the occurrence of postoperative pancreatic fistula (POPF) by influencing both the blood supply to the anastomosis and the location of the main pancreatic duct in the pancreatic transverse section. The investigators conduct a retropective propensity score-matched comparison to compare the impact of extended pancreatic transection and conventional pancreatic transection on POPF and the performance of the pancreaticojejunostomy during LPD.

Inclusion Criteria:

1. consecutive patients underwent elective laparoscopic pancreaticoduodenectomy within October 2019 to April 2023
2. the perioperative and follow-up study data information can be collected completely
3. The level of pancreatic neck dissection can be determined by postoperative abdominal CT
4. patients without the history of neoadjuvant chemotherapy or radiotherapy

Exclusion Criteria:

1. conversion to laparotomy due to various reasons during operation;
2. combined with resection and reconstruction of the portal vein or the superior mesenteric vein
3. combined with other organ resection
4. the perioperative and follow-up study data information can not be collected completely, or the level of pancreatic neck dissection can not be determined by postoperative abdominal CT
5. patients with the history of neoadjuvant chemotherapy or radiotherapy
6. the main pancreatic duct did not be found during the operation, the duct-to-mucosa pancreaticojejunostomy could not be performed

patients who had underwent laparoscopic pancreaticoduodenectomy