Abstract
A 33-year-old woman was admitted for left abdominal pain. Blood examination revealed an elevation of serum amylase. Computed tomography showed a swollen pancreas with fat strands around the pancreas and a low dense mass with a diameter of 9 mm in the pancreas head. The lesion was diagnosed as acute pancreatitis associated with a pancreatic tumor. On the 3rd hospital day, the patient presented high fever and peripancreatic fluid collection. Percutaneous puncture revealed amylase rich contents. The entire quantity of fluid was aspirated, and the patient's fever resolved the next day. However, fluid collection had to be repeated on the 5th hospital day. ERCP showed a locally compressed and narrowed main pancreatic duct at the pancreas head. An endoscopic nasopancreatic drainage catheter was inserted in the area of the pancreas tail and, the accumulated peripancreatic fluid was removed. The pancreas head tumor was diagnosed as a neuroendocrine tumor by EUS-FNA. It was assumed that the pancreas head tumor disturbed pancreatic juice flow and caused the acute pancreatitis. Eventually, a pancreatoduodenectomy was performed and the tumor was diagnosed as neuroendocrine tumor.
