This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parathyroid & Adrenal Glands, Subject name: Surgery
Post operative hypoparathyroidism related hypocalcemia usually presents with in 
Select and explain. 
A. 48 hours, B. 10 days, C. 10 weeks, D. 6 month
A: 48 hours
Answer: A: 48 hours 
Explanation: (A) (48 hours) (762- Bailey & Love 26th)Parathyroid insufficiency - the incidence of permanent hypoparathyroidism should be less than 1% and most cases present dramatically 2-5 days after operation, but very rarely, the onset is delayed for 2-3 weeks or if a patients with marked hypocalcaemia is asymptomatic