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Arteriovenous malformation of the occipital lobes in a Nigerian

O O Onabolu1, T Y Oyebadejo

  • 1Department of Ophthalmology, Olabisi Onabanjo College of Health Sciences, Sagamu, Nigeria. tonionabolu@yahoo.com

The Nigerian Postgraduate Medical Journal
|June 12, 2010
PubMed
Abstract

Insights

Arteriovenous malformations in the occipital lobe can present solely with visual loss. Early diagnosis through visual field tests and angiographic studies is crucial to prevent severe outcomes like intracerebral hemorrhage.

Area of Science:

  • Neurology
  • Neuroradiology
  • Vascular Neurology

Background:

  • Arteriovenous malformations (AVMs) are complex vascular anomalies.
  • Occipital lobe AVMs pose diagnostic challenges due to potential for subtle or absent focal neurological deficits.

Observation:

  • A 61-year-old male presented with chronic headache and progressive visual loss.
  • Initial neuroimaging (Computed Tomography) was unremarkable.
  • The patient experienced sudden deterioration and expired shortly after presentation.

Findings:

  • Autopsy revealed arteriovenous malformations in the occipital and parietal lobes.
  • Visual loss can be the primary or sole manifestation of occipital lobe AVMs.
  • Computed tomography has limitations in detecting certain intracranial vascular lesions.

Implications:

  • Visual field testing is essential for diagnosing occipital lobe pathologies.
  • Angiographic studies are critical for definitive diagnosis of suspected AVMs.
  • Timely diagnosis of AVMs is vital to prevent catastrophic intracranial hemorrhage.

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