Abstract
A 29-year-old woman, who had been treated for acute pancreatitis on an ambulant basis, developed pancreatic lithiasis and cysts within a short period of observation. Afterward she was admitted to the hospital because of left flank pain, back pain, and fever. As a result of clinical examinations, a rapid growth of the cyst out of the pancreas was pointed out. Resection of the pancreatic body and tail, excision of the cyst, removal of the pancreatic lithiasis, and pancreaticojejunostomy were performed. Histologically, chronic pancreatitis with pancreatic pseudocyst was diagnosed. Acidophilic substance with calcification in the pancreatic duct would suggest the development of the pancreatic lithiasis.