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': 'Hyperparathyroidism is characterized by the following except: \nSelect and explain. \nA. Generalized osteoporosis, B. Renal calculi, C. Hypercalcemia, D. Osteosclerosis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Patients with PHPT(Primary hyperparathyroidism) formerly present with the "classic" pentad of symptoms:Kidney stonesPainful bonesAbdominal groansPsychic moansFatigue oveonesDiagnosis:- Elevated serum calcium and intact PTH or two-site PTH levels, without hypocalciuria establishes the diagnosis of PHPT', 'role': 'assistant'}]