This revised chart illustrates digestive anatomy and disorders such as Barrett's esophagus, gastroesophageal reflux disease (GERD), hiatal hernia, and various stages of gastric ulcers: erosion, acute ulcer, and bleeding/perforating ulcer. The chart also shows ulcers caused by Zollinger-Ellison syndrome. Also included are visual and textual descriptions of H. pylori bacteria (also known as helicobacter pylori), which is a factor in gastric disorders. Size: 20" W x 26" L