SURGE Gastroduodenal Diseases Omar Alaidaroos Presentations Gastritis Peptic ulcer Hiatus Hernia Gastrinoma - ZOLLINGER–ELLISON SYNDROME Gastric & duodenal neoplasm Benign Gastric Polyps Ectopic Pancreas Malignant Gastric Adenocarcinoma 90-95% Gastric Lymphoma 1-5% Gastrointestinal stromal tumors - GIST 2%