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CASE REPORT
Year : 2016  |  Volume : 8  |  Issue : 2  |  Page : 52-53

Bilateral vocal cord paralysis with acute ischemic stroke


Wayne State University Detroit Medical Center, Detroit, Michigan, USA

Correspondence Address:
Taofik Nasrat
Wayne State University Detroit Medical Center, Detroit, Michigan
USA
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1947-489X.210215

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Vocal cords receive nerve supply from recurrent laryngeal nerve which is a branch of the vagus nerve. Cerebral motor cortex projects corticobulbar tracts to the motor nucleus (nucleus ambiguous) of the vagus found in medulla. Vagus nerve leaves the skull through jugular foramen and travels through the carotid sheath. The left vagus gives rise to left recurrent laryngeal nerve at the aortic arch, whereas the right vagus gives rise to right recurrent laryngeal nerve at the subclavian artery. Any disruption of this pathway by any entity will cause unilateral vocal cord paralysis. Strokes that affect the motor cortex do not cause unilateral vocal cord paralysis since vagus nerve nucleus receives corticobulbar tract from both sides of the brain. We present an unusual case of bilateral vocal cord paralysis caused by unilateral right insular stroke which is not related to this pathway.


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