Acute oculomotor nerve palsy requires urgent exclusion of aneurysmal compression. We report a 62year old man with a transient right third nerve palsy with pupillary involvement, who was found to have neurovascular compression of the cisternal oculomotor nerve as it curved over a duplicated superior cerebellar artery on high resolution MR imaging. Direct vascular compression should be considered in patients with isolated cranial neuropathies in whom other pathologies have been excluded.
Keywords: Compression; Neurovascular; Oculomotor.
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