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 young patient presented with HTN and VMA 14 mg/24, the causes is/are -a) Medullary carcinoma thyroidb) Von Hippel Lindau syndromec) Graves diseased) Pseudohypoparathyroidisme) Sturge weber syndrome \nSelect and explain. \nA. abc, B. bcd, C. cde, D. abe', 'role': 'user'}, {'content': "Answer: D \nExplanation: Familial syndrome associated with pheochromocytomas are :\n\nMEN type II A\nMEN type II B\nVon Hippel- Lindau disease\nVon Reclinghausen's neurofibromatosis\nSturge weber syndrome\n\nDiagnosis of Pheochromocytoma :\n\nPheochromocytomas secrete abnormally large amount of catecholamines which are responsible for characteristic clinical manifestation of pheochromocytomas.\nThe diagnosis is established by demonstration of increased production of catecholamines or catecholamine metabolites.\nThe diagnosis is made by analysis of single 24 hours urine sample.\n\nBiochemical and Imaging Methods Used for Pheochromocvtoma and Paraganglioma Diagnosis", 'role': 'assistant'}]