A 10-year-old boy presented with a complete left oculomotor cranial nerve palsy. Diagnostic evaluation including neuroimaging and cerebral angiography revealed a small intracranial aneurysm compressing the third nerve. Neurosurgical clipping of the aneurysm produced resolution of the third nerve palsy. The rarity of this presentation in a young patient is discussed, along with the importance of rapid diagnosis and treatment Copyright (C) 1999 Elsevier Science Inc.
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