Zollinger Ellison syndrome is caused by ?: (A) Gastrin secreting tumor, (B) Somatostatin secreting tumor, (C) CCK secreting tumor, (D) Adrenalin secreting tumor
Answer is A. 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.