â  the ampulla of vater is commonly located in the posteromeâ­dial wall of the second portion of the duodenum. at times, the ampulla of vater may be found at uncommon sites such as the third and fourth portions of the duodenum, the duodenal bulb and the stomach. we found the ampulla of vater in the pyloric channel in a 44 year old patient who had undergone surgery for acute cholecystitis. an in...

Double pylorus, also known as acquired double is a rare condition defined gastrointestinal fistula connecting stomach antrum and duodenal bulb. The prevalence of pylorus ranges from 0.001 to 0.4% by esophagogastroduodenoscopy (EGD). Although the etiology unknown, formation related <i>Helicobacter pylori</i> infection use non-steroidal anti-inflammatory drugs (NSAID). development occ...