Article
Posterior ischemic optic neuropathy revealing: rupture of an anterior communicating artery aneurysm
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Published: | September 22, 2004 |
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Outline
Text
Objective
To report a case of posterior ischemic optic neuropathy as the initial neuro-ophthalmic symptom of a ruptured anterior communicating artery aneurysm.
Design
observational case report.
Methods
A 29-year-old woman presented with acute unilateral visual loss and superior altitudinal visual field defect, following an episode of initially believed migrainous headache.
Results
Magnetic resonance and cerebral angiography revealed a ruptured anterior communicating artery aneurysm, subsequently treated by interventional radiology procedures.
Conclusions
Rupture of an anterior communicating artery aneurysm may cause a posterior ischemic optic neuropathy.
Ruptured intracranial aneurysms may initially present with neuro-ophthalmic symptoms. (1) Among them, the vast majority of ruptured aneurysms of the anterior communicating artery (AcomA) present typically with subarachnoid haemorrhage (SAH), isolated visual complaints being very uncommon in this setting. (2) A possible explanation is that an AcomA aneurysm usually rupture before becoming large enough to compress the visual pathways. (3) In this report, we present an unusual case of a patient presenting with a posterior ischemic optic neuropathy (PION), secondary to a ruptured AcomA aneurysm.