CN X Pathology
Due to close proximity with CN IX and XI, an isolated lesion of the vagus nerve is rare. Neoplasm or aneurysm may result in ipsilateral drooping of soft-palate with uvular deviation towards the affected side. As a result of its innervation (through the recurrent laryngeal nerve) to the the vocal cords, hoarseness may develop. In addition, patients may present with dysphagia, dysphonia and decreased gag reflex. Due to its parasympathetic input, cardiac and gastrointestinal abnormalities may be seen with vagal lesions.