title: DIFFICULTIES IN THE DIAGNOSIS OF THE ZOLLINGER-ELLISON SYNDROME.
mesh_terms: D007813:Laparotomy; D009369:Neoplasms / Q000175:diagnosis*; D010336:Pathology; D015043:Zollinger-Ellison Syndrome
keywords: LAPAROTOMY; NEOPLASM DIAGNOSIS; PATHOLOGY; ZOLLINGER-ELLISON SYNDROME