Laparoscopic resection
ProcedureThe surgical instruments used for the laparoscopic group included conventional laparoscopic instruments (three 5 mm trocars, two 10 mm trocars, and two damage-free laparoscopic clamps), the STORZ high-resolution laparoscopic operating system (Germany), the GEN300 ultrasonic scalpel system (Johnson & Johnson, USA), a laparoscopic linear cutter stapler (Johnson & Johnson, USA), a laparoscopic ultrasound device, LigaSure, bipolar coagulation, titanium laparoscopic clips, and absorbable hemostatic gauze.