since considerable evidence indicated that cells of small pancreatic ducts give rise to islet cells , case 2 suggests that some tumors of ductal origin recapitulate the embryogenesis of the pancreatic islets and , therefore , may contain neurosecretory granules without showing the classic morphology of the more common pancreatic endocrine tumors .
C0022131
pancreatic islets
C0030274
pancreatic