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