<prompt> Investigation of choice in case of a pt. with episodic hypertension, headache and thyroid nodule -Urinary HIAAUrinary catecholomine and aspiration of noduleThyroid function test onlyUrinary basic amino acid metabolite  <response>: This pt is having MEN type II syndrome which is characterized byPheochromocytoma andMedullary carcinoma of thyroid MCTUrinary catecholamines are increased in pheochromocytomaAspiration of nodule will show amyloid material seen in MCT 