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Hypoglossal canal schwannoma causing isolated left 12th cranial nerve palsy

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A 40-year-old woman presented with insidious onset, gradually progressive dysarthria and inability to manoeuvre bolus of food in her mouth while eating. The duration of her symptoms was 3 months.… Click to show full abstract

A 40-year-old woman presented with insidious onset, gradually progressive dysarthria and inability to manoeuvre bolus of food in her mouth while eating. The duration of her symptoms was 3 months. On evaluation, the left half of her tongue was wasted. The tongue deviated to the left on protrusion. There were no clinical features suggestive of involvement of the ipsilateral 9th, 10th or 11th cranial nerves. MRI of the brain showed a large, fusiform lesion in the left hypoglossal canal, extending into the jugular canal. The lesion was surgically excised and found to be a schwannoma.

Keywords: causing isolated; canal schwannoma; left 12th; isolated left; hypoglossal canal; schwannoma causing

Journal Title: BMJ Case Reports
Year Published: 2018

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