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Infected pancreatic necrosis is a fatal complication of severe acute pancreatitis ( SAP),while traditional laparotomy has many disadvantages,such as great trauma and many complications,in recent years,minimally invasive treatment has got great progress in clearing the necrotic tissue of pancreas,but its drainage effect is not optimal.From January 2010 to December 2011,19 patients with infected pancreatic necrosis complicated by SAP who were admitted to the Nanjing General Hospital of Nanjing Military Area were implemented computed tomography or ultrasound-guided Seldinger puncture.Along the puncture needle,a guide wire was inserted into the necrotic tissue,and then the sinus was expanded,in which a tube was placed for negative pressure irrigation and drainage.By continuous postoperative negative pressure irrigation and drainage,the necrotic tissue gradually dropped off and disappeared in 12 patients,and the other 7 patients were performed endoscopic necrotic tissue removal and drainage along the sinus.Systemic symptons of infection obviously improved in all of the 19 patients,and no organ dysfunction or complications occurred.Finally,16 patients were cured and 3 patients died.Continuous percutaneous negative pressure irrigation and drainage combined with the endoscopic necrotic tissue removal could become an important choice to treat the infected pancreatic necrosis.