This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Pituitary Gland, Subject name: Pediatrics
[{'content': "13-year-old boy presented with complaints of episodes of headache, abdominal pain, palpitations, excessive sweating and dizziness. His mother also told that his weight is not gaining . On examination he is hypeensive, and tremors are present. What is the likely cause of child's condition? \nSelect and explain. \nA. Diabetes mellitus, B. Hysterical fainting spells, C. Pheochromocytoma, D. Hypothyroidism", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Clinical findings s/o Pheochromocytoma. Pheochromocytomas: catecholamine-producing tumors that arises from chromaffin cells of abdominal sympathetic chain / Peri adrenal area / thoracic cavity. These tumors may arise sporadically or be inherited as features of MEN 2 or von Hippel- Lindau (VHL) disease or Neurofibromatosis More likely to be B/L than adults C/F: Episodes of palpitation, headache, and profuse sweating (classic triad) with dominant sign of Hypeension. Diagnosis : increase urinary VMA Rx: surgical removal Pre- operative alpha blockade with prazosin', 'role': 'assistant'}]