Inverted-Ω Anastomosis in Laparoscopic Duodenum-Preserving Pancreatic Head Resection or Laparoscopic Central Pancreatectomy

After meeting the inclusion and exclusion criteria, duodenum-preserving pancreatic head resection or mid-pancreatic resection will be performed, and inverted-Ω anastomosis will be carried out during the operation for the reconstruction of the digestive tract