胰腺假性囊肿(pancreatic pseudocyst,PPC)是重症急性胰腺炎(severe acute pancreatitis,SAP)的常见局部并发症之一,是胰腺坏死组织及胰液等积聚在胰腺周围、小网膜以及大网膜内,刺激周围结缔组织增生,逐渐形成纤维性囊壁包裹的囊肿,囊壁缺乏上皮细胞,故为假性囊肿。最早可在发病1周内出现,多数是在发病后6周[1-4]。由于假性囊肿常与胰管分支和胰腺组织相交通,因胰液 Pancreatic pseudocyst (PPC) is one of the common local complications of severe acute pancreatitis (SAP), which is the accumulation of pancreatic necrotic tissue and pancreatic juice in the pancreas, the omentum and the omentum , Stimulate the proliferation of connective tissue around, and gradually formed a fibrous cyst wrapped cysts, lack of epithelial cells wall, it is a pseudocyst. The earliest onset of the disease within 1 week, mostly in the 6 weeks after onset [1-4]. Due to pseudocysts and pancreatic duct often associated with pancreatic tissue traffic, due to pancreatic juice