A hereditary disorder distinguished by the occurrence of numerous cancerous growths in the pituitary gland, parathyroid gland, and islet cells of the pancreas is known as multiple endocrine neoplasia type 1 (MEN-1). Approximately half of individuals with MEN-1 who develop pancreatic islet cell tumors will also exhibit gastrinomas, which are tumors that produce gastrin and contribute to the development of ulcer disease.