title: Zollinger Ellison syndrome: a case report.
mesh_terms: D005755:Gastrins / Q000097:blood*; D006801:Humans; D008113:Liver Neoplasms / Q000556:secondary; D008297:Male; D008875:Middle Aged; D015043:Zollinger-Ellison Syndrome / Q000097:blood* / Q000473:pathology
chemical_list: D005755:Gastrins