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
Pheochromocytomas are known to arise from all of the following, except: 
Select and explain. 
A. Adrenal gland, B. Mediastinum, C. Neck, D. Chest wall
D: Chest wall
Answer: D: Chest wall 
Explanation: Answer is D (Chest wall): Pheochromocytomas are not found in the chest wall Pheochromocytomas may be found in the adrenal gland, neck and mediastinum (along the sympathetic chain), abdomen (paraaoic) and urinary bladder. Sites of pheochromocytoma Adrenal gland (most common) Head and Neck Thorax (mediastinum) Intra abdominal (paraaoic) Bladder