标题：Teaching Video NeuroImages: Vagus nerve schwannoma A trigger for cough
作者：Si, Meng; Cong, Menglin; Wang, Dandan; Ma, Hecheng
作者机构：[Si, Meng; Cong, Menglin; Ma, Hecheng] Shandong Univ, Qilu Hosp, Dept Spine, Jinan, Peoples R China.; [Wang, Dandan] Shandong Univ, Jinan Ctr Hosp, 更多
通讯作者地址：Ma, HC (corresponding author), Shandong Univ, Qilu Hosp, Dept Spine, Jinan, Peoples R China.
摘要：A 40-year-old man presented with an insidious slowly enlarging nontender, firm, and movable mass on the right side of the neck for 3 years (figure 1). He had a 2-month history of paroxysmal cough and the cough could be elicited when the mass was palpated (video). MRI (figure 2) demonstrated that the mass involved the vagus nerve and displaced sternocleidomastoid muscle and the internal jugular vein laterally. The cough reflex is caused by stimulation of vagal nerve afferents.(1,2) Microscopic dissection showed the tumor was in the carotid sheath and arose from a single fascicle of the vagus nerve. The pathologic diagnosis was schwannoma. After the surgery, the patient had a normal voice, with no evidence of paroxysmal cough or recurrence.