PURPOSE: To assess the value of the initial fasting serum gastrin (FSG) at presentation in patients with Zollinger-Ellison Syndrome (ZES) in predicting primary tumor characteristics and survival.

Table 1 illustrates that pretreated Patients with GERD showed heartburn, epigastric pain, and significant decrease in LES pressure, residual pressure, relaxation percentage, pH, serum gastrin and mean ...