This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Which of the following structure is not removed in radical neck dissection- 
Select and explain. 
A. Spinal accessory nerve, B. Submandibular, C. Tail of parotid, D. Level 2 b lymph nodes
C: Tail of parotid
Answer: C: Tail of parotid 
Explanation: Answer- CStructures removed during radical neck dissection-The classic operation involves resection of the cervical lymphatics and lymph nodes and those structures closely associated:the internal jugular vein,the accessory nerve,the submandibular gland, andthe sternocleidomastoid muscle.