All cases of laparotomy/lumbotomy will be retrospectively analysed, with evaluation of mortality, complications, in-hospital stay, indications for surgery, findings during operation, combination with minimally invasive procedures (radiological drainage, necrosectomy). Assessment of risk factors, like erosive bleeding, intraperitoneal perforation of collection, gut resection, splenectomy, relaparotomy will be done.
Retrospective analysis of the cases of traditional open surgery for acute necrotizing pancreatitis, with evaluation of indications for surgery, intraoperative findings, mortality rate and risk factors of mortality.