<unk><unk>  syndrome results from increased levels of gastrin due to an existing gastrinoma in the duodenum or pancreas.
Zollinger-Ellison syndrome pathophysiology
Mallory-Weiss syndrome pathophysiology
Pancreatic cancer pathophysiology
Mesenteric ischemia pathophysiology
Hirschsprung's disease pathophysiology
Lactose intolerance pathophysiology
Meckel's diverticulum pathophysiology
H.pylori gastritis pathophysiology