<unk>  (Z-E syndrome) is a disease in which tumors cause the stomach to produce too much acid, resulting in peptic ulcers. Symptoms include abdominal pain and diarrhea. The syndrome is caused by a gastrinoma, a neuroendocrine tumor that secretes a hormone called gastrin. Too much gastrin in the blood (hypergastrinemia) results in the overproduction of gastric acid by parietal cells in the stomach. Gastrinomas most commonly arise in the duodenum, pancreas or stomach. In 75% of cases<unk>  occurs sporadically, while in 25% of cases it occurs as part of an autosomal dominant syndrome called multiple endocrine neoplasia type 1 (MEN 1).
Zollinger–Ellison syndrome
Toriello–Carey syndrome
Naegeli–Franceschetti–Jadassohn syndrome
Johanson–Blizzard syndrome
Meigs's syndrome
Whipple's disease
HIDEA syndrome
Löffler's syndrome