Based on this image, choose the best description of this patient's finding.
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A lesion in which of the following locations would most likely cause this patient's findings?
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This person has a complete left oculomotor nerve (cranial nerve 3) palsy with ptosis, impaired eye movements, and a dilated pupil.
The third cranial nerve originates in the midbrain. It has an oculomotor and a parasympathetic nerve component.