increased insulinoma incidence increased pancreatic beta cell tumor incidence increased insuloma incidence MPheno.ontology MP:0003364 increased beta-cell adenoma incidence increased beta-cell tumor incidence greater than the expected number of a benign epithelial neoplasm with a glandular organization arising in the pancreatic islet beta cells, occurring in a specific population in a given time period; these tumors secrete excess insulin increased pancreatic islet cell adenoma incidence