Multicenter Prospective Randomized Trial about Clinical Effect of Absorbable Suture Materials against Surgical Site Infection in Hepatic Resection and Pancreatoduodenectomy

INTERVENTION: Use of silk sutures in peritoneal cavity Use of absorbable sutures in peritoneal cavity CONDITION: Liver disease, Pancreas disease PRIMARY OUTCOME: Rate of surgical site infection occurrence SECONDARY OUTCOME: 1) Rate of surgical site infection occurrence by sites (superficial incision wound, deep incision wound, organ/cavity); 2) 1. Duration until healing of surgical site infection; 2. Occurrence rate in pancreas leakage or bile leakage; 3. Hospital stay after surgery INCLUSION CRITERIA: 1) Group 1: Hepatic resection Group 2: Pancreastoduodenectomy 2) Age ranged from 20 to 80 years old 3) Child‐Pugh A or B in cirrhotic patients 4) Performance status 0‐1 5) Preserved general condition; 1. WBC:3,000<=WBC<10,000 /microlitre 2. Neu:Neu>=1,500 /microlitre 3. Hb:Hb>=9.0 g/dL 4. Plt:Plt>=70,000 /microlitre 5. TB:TB<=1.5 mg/dL 6. AST:AST<=100 IU/L 7. ALT:ALT<=100 IU/L 8. Cr:Cr<=1.2 mg/dL 9. Alb:Alb>=2.8 g/dL 6) Provision of written informed consent