This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parathyroid and adrenal glands, Subject name: Surgery
[{'content': 'A 50-year-old male presents with severe refractory hypeension, weakness, muscle cramps and hypokalemia, the most likely diagnosis is: \nSelect and explain. \nA. Hypoaldosteronism, B. Hyperaldosteronism, C. Cushing syndrome, D. Pheochromocytoma', 'role': 'user'}, {'content': "Answer: B \nExplanation: Manifestation of Conn's Syndrome (Primary Hyperaldosteronism) Clinical Laboratory Muscle weakness and fatigue (due to hypokalemia) Hypeension without edema Polyuria and polydipsia Hypokalemia Metabolic alkalosis Hypernatremia Increased Aldosterone Low renin", 'role': 'assistant'}]