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Published on: January 27, 2015
Arteriovenous malformations presenting with papilloedema
Lai-Wah Eva Fung1, Vijeya Ganesan
1Neurosciences Unit, Institute of Child Health, University College London, London, UK.
Insights
Cerebral arteriovenous malformations (AVMs) can cause papilledema, a sign of increased intracranial pressure. Early visual assessment and timely management are crucial for pediatric patients with AVMs.
Area of Science:
- Neurology
- Ophthalmology
- Pediatrics
Background:
- Cerebral arteriovenous malformations (AVMs) are common vascular anomalies, often presenting with intracranial hemorrhage in pediatric patients.
- Papilledema, a sign of elevated intracranial pressure, can be associated with AVMs, necessitating thorough neurological and visual assessment.
Observation:
- Two pediatric cases of incidental cerebral AVMs associated with bilateral papilledema are presented.
- Case 1: A 13-year-old male with a temporal lobe AVM, headache, and papilledema, treated with acetazolamide and stereotactic radiosurgery.
- Case 2: A 14-year-old male with a posterior fossa AVM, asymptomatic neurologically but with papilledema, treated with embolization.
Findings:
- Both patients presented with papilledema, indicating elevated intracranial pressure, despite one being asymptomatic neurologically.
- Medical management (acetazolamide) and interventional procedures (stereotactic radiosurgery, embolization) led to resolution of papilledema and AVMs.
- Visual acuity and visual fields remained normal in both patients throughout their management.
Implications:
- Highlights the importance of visual assessment in pediatric patients diagnosed with cerebral AVMs, even in the absence of overt neurological symptoms.
- Suggests a potential link between AVMs and raised intracranial pressure, emphasizing the need for prompt diagnosis and multidisciplinary management.
- Demonstrates successful outcomes with both conservative and interventional treatment strategies for AVM-associated papilledema in children.
Abstract:
Cerebral arteriovenous malformations (AVMs) are fairly common and the majority of paediatric patients with this condition also present with intracranial haemorrhage. Two patients who had an incidental finding of an AVM associated with papilloedema are described here. The first was a 13-year-old male who presented after an accidental kick to the eyes. Examination revealed bilateral papilloedema. He gave a 2-year history of intermittent headache. Brain magnetic resonance imaging (MRI) showed an unruptured AVM in the temporal lobe. Lumbar puncture revealed elevated cerebrospinal fluid pressure. Visual acuity and visual fields were normal. He was treated with acetazolamide and improved within a few weeks. He subsequently underwent stereotactic radiosurgery to the AVM. He discontinued acetazolamide due to adverse side effects and there was no recurrence of headache and papilloedema. The second patient was a 14-year-old male who had polyarticular juvenile chronic arthritis and received low-dose steroids and methotrexate. Bilateral papilloedema was discovered during routine ophthalmology surveillance and he was otherwise asymptomatic neurologically. Brain MRI revealed an AVM in the posterior fossa. He had three embolization procedures, which have resulted in significant reduction in lesion size. The papilloedema resolved completely after the first two procedures, and visual acuity and fields remained normal. Here, possible underlying mechanism of raised intracranial pressure and importance of visual assessment in those with AVMs and their management are discussed.
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