This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous ENT, Subject name: ENT
[{'content': 'Radical neck dissection involves all except \nSelect and explain. \nA. Sternocleidomastoid muscle, B. Internal jugular vein, C. Vagus nerve, D. Spinal accessory nerve', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Vagus nerve is not removed in Radical Neck Dissection. Structures removed in Radical Neck Dissection: Level I-V Lymph nodes, Sternocleidomastoid, Internal Jugular Vein, Spinal Accessory Nerve, Submandibular salivary gland, Tail of parotid and Omohyoid muscle. Ref: Textbook of ENT, Dhingra; 6th edition; Pg no: 388 ref img', 'role': 'assistant'}]