<prompt> A 34-year-old man complains of sudden attacks of dizziness, blurred vision, and excruciating headaches of 4 months in duration. During one of these attacks, his blood pressure was 180120 mm Hg. The patients father had been treated for thyroid cancer about 15 years ago. Laboratory studies show normal serum levels of aldosterone, renin, and angiotensin. A 24-hour urinalysis reveals increased metanephrines. Episodic hypeension in this patient is most likely caused by a tumor in which of the following endocrine organs?AdrenalKidneyParathyroidPituitary  <response>: - Given clinical features suggests the diagnosis of Pheochromocytoma - Pheochromocytoma Arising from chromaffin cells of adrenal medulla that secretes catecholamines. Can originate in extra-adrenal sites - Paragangliomas. Clinical features are caused dt release of catecholamines. - The other choices do not include tumors that lead to episodic hypeension. 