Investigation of choice in case of a pt. with episodic hypeension, headache and thyroid nodule -
This pt is having MEN type II syndrome which is characterized by Pheochromocytoma and Medullary carcinoma of thyroid (MCT) Urinary catecholamines are increased in pheochromocytoma Aspiration of nodule will show amyloid material (seen in MCT) Ref : Harrison 17/e p2359