Zollinger Ellison syndrome is caused by ?
Ans. is 'a' i.e., Gastrin secreting tumor Zollinger-Ellison syndrome is caused by gastrin-secreting tumors. These gastrinomas are most commonly found in the small intestine or pancreas.
Gastrin secreting tumor
Somatostatin secreting tumor
CCK secreting tumor
Adrenalin secreting tumor