This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Surgery
Hypoparathyroidism after thyroidectomy commonly manifests in 
Select and explain. 
A. 1 day, B. 2-5 days, C. After a week, D. After a month
B: 2-5 days
Answer: B: 2-5 days 
Explanation: Parathyroid insufficiency after thyroidectomyThis is due to removal of the parathyroid glands or infarction through damage to the parathyroid end aery; 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 per cent and most cases present dramatically 2-5 days after operation but, veryrarely, the onset is delayed for 2-3 weeks or if a patient with marked hypocalcaemia is asymptomatic.