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: Surgery
[{'content': 'Hypoparathyroidism following thyroid surgery occurs within \nSelect and explain. \nA. 24 hours, B. 2-5 days, C. 7-14 days, D. 2-3 weeks', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Parathyroid insufficiency is due to the removal of the parathyroid glands or infarction through damage to the parathyroid end aeries; often both factors occur together. Vascular injury is probably far more impoant than inadveent removal. The incidence of permanent hypoparathyroidism should be less than 1% and most cases present dramatically 2-5 days after an operation but, very rarely, the onset is delayed for 2-3 weeks or a patient with marked hypocalcemia may be asymptomatic.Ref: Bailey and Love, page no: 815', 'role': 'assistant'}]