DIFFERENTIAL DIAGNOSIS OF HYPERGASTRINEMIA

Hypersecretory States

     Zollinger-Ellison Syndrome

     Retained Gastric Antrum

     Extensive Small-Bowel Resection (rare)

     Helicobacter pylori Infection

     Gastric Outlet Obstruction

     Pheochromocytoma

Hyposecretory States

     Pernicious Anemia

     Atrophic Gastritis

     Rheumatoid Arthritis

     Vitiligo

     Post Vagotomy

     Diabetes Mellitus

    Chronic Renal Failure

    Ingestion of Acid Inhibitory Medications