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
Sistrunk&;s operation consists of 
Select and explain. 
A. Excision of hyoid bone and cone of tongue muscle, B. Excision of hyoid bone and the cyst, C. Excision of central pa of hyoid bone and cone of tongue muscle upto foreman caecum, D. Excision of cyst only
C: Excision of central pa of hyoid bone and cone of tongue muscle upto foreman caecum
Answer: C: Excision of central pa of hyoid bone and cone of tongue muscle upto foreman caecum 
Explanation: Sistrunk operation include excision of the whole thyroglossal tract, which involves removal of the body of the hyoid bone and the suprahyoid tract through the tongue base to the vallecula at the site of the primitive foramen caecum, together with a core of tissue on either side. Bailey and Love 26th edition Pg : 702