This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Adrenal Gland, Subject name: Medicine
Which of the following disease is known as "Great Masquerader"? 
Select and explain. 
A. Chemodectoma, B. Argentaffinoma, C. Paraganglioma, D. Pheochromocytoma
D: Pheochromocytoma
Answer: D: Pheochromocytoma 
Explanation: Since Pheochromocytoma has a variable presentation it is known as "Great Masquerader". It presents as episodes of palpitations, headache and profuse sweating. Catecholamine crisis can lead to hea failure, pulmonary edema, arrhythmia and intracranial hemorrhage. Moreover paroxysms are precipitated by surgery, positional changes, exercise and urination leading to great diagnostic challenge.