This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and breast, Subject name: Anatomy
[{'content': 'Hypoparathyroidism occurs as a result ofa) Idiopathic atrophy of parathyroidsb) Following surgeryc) Thyroditis with secondary atrophy of parathyroidsd) All of the above \nSelect and explain. \nA. ac, B. a, C. ab, D. bc', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Mostly due to removal of the parathyroid glands or infarction due to vascular injury.* Vascular injury is more impoant.* Cases usually present 2-5 days after operation with symptoms of hypocalcemia (circumoral and fingeip numbness and tingling tetany, carpopedal spasm and laryngeal stridor) * Treatment with oral calcium and vitamin D supplements* IV calcium gluconate may be required in severe cases.', 'role': 'assistant'}]