This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Extraadrenal Pheochromocytoma predominantly secretes: 
Select and explain. 
A. Epinephrine, B. Norepinephrine, C. Dopamine, D. DOPA
B: Norepinephrine
Answer: B: Norepinephrine 
Explanation: Answer is B (Norepinephrine): Most extraadrenal pheochromocytomas secrete norepinephrine exclusively Most pheochromocytomas produce both norepinephrine and epinephrine and the percentage of norepinephrine is usually greater than in normal adrenal. Most Extraadrenal pheochromocytoma secrete norepinephrine exclusively. Pheochromocytomas in association with MEN may rarely produce epinephrine alone.