among patients with proved and possible endocrine pancreatic tumors , elevated serum levels of gastrin and pancreatic polypeptide were frequently found , 78 percent and 67 percent , respectively , and we suggest that serum gastrin and pancreatic polypeptide levels are the most useful screening markers at present for pancreatic lesions in mea i .
C0242363
endocrine pancreatic
C0030274
pancreatic