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
[{'content': 'A patient presents with an intermittent headache. On examination, there is hypertension and a thyroid nodule. Which of the following steps is to be taken next - \nSelect and explain. \nA. Urine HIAA levels, B. Urine VMA and aspiration of the thyroid nodule, C. Ultrasound abdomen, D. Echocardiography', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Intermittent headache (which is the most common symptom of Phaeochromocytoma) and thyroid Nodule points towards the occurrence of Phaeochromocytoma with Medullary Carcinoma Thyroid.\n\n\nPheochromocytoma together with medullary carcinoma of thyroid is a feature of MEN II syndrome.\nThey are associated with both MEN IIA and MEN IIB.\n\n\xa0\n\nDiagnosis of phaeochromocytoma \n\n\nIt is done by demonstrating excretion of catecholamine or catecholamine metobolites in urine.\nThe assays employed include those for\n\n\nVanillymandelic acid\nMetanephrines\n\n\nUnconjugated catecholamines or free Catecholamines.\nFor the diagnosis of Medullary Ca Thyroid aspiration is done of Thyroid Nodule.', 'role': 'assistant'}]