A Deviated Diagnosis

A patient presents with a deviated tongue on protrusion. Uncover the cranial nerve lesion responsible and its surprising vascular cause in this Neurology case.

Left hypoglossal nerve


What cranial nerve palsy is most clearly illustrated in this image?

What is the most likely diagnosis?

Left facial nerve
Left glossopharyngeal nerve
Left hypoglossal nerve
Right glossopharyngeal nerve
Right hypoglossal nerve

Carotid artery dissection, Cranial nerve palsy, Left hypoglossal nerve, Neurology, Tongue deviation

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