Extended Pancreatic Neck Transection Versus Conventional Pancreatic Neck Transection During Laparoscopic Pancreaticoduodenectomy( LPDEXCEPT)

Inclusion Criteria

• •1. Patients with benign or resectable malignant tumors of the lower common bile duct, Vater ampulla, head or uncinate process of the pancreas.
• •2. 18 years old \< age \< 80 years old, no gender limit.
• •3. Patient is expected survival beyond 3 months.
• •4. No pregnancy or pregnancy plan within 3 months after surgery.
• •5. Nutrition risk score \<3 according to the Nutritional Risk Screening for Inpatients 2002 (NRS2002) standard score.
• •6. No contraindication to surgery for anesthetic evaluation.
• •7. The subjects voluntarily joined the study and signed an informed consent form, with good compliance and cooperation with follow-up.