Qamarul Islam.
Homonymous hemianopia due to occipital arteriovenous malformation.
Pak Armed Forces Med J Jan ;61(3):481-2.

Retrochiasmal optic tract pathology results in contralateral homonymous hemianopia. Hemianopia due to the lesion in anterior optic tract is characteristically non congruous, while that due to pathology in posterior optic radiations and occipital cortex are highly congruous1. An arteriovenous malformation (AVM) of brain is an uncommon developmental vascular pathology that may result in significant visual morbidity. The prevalence of brain AVM ranges from 0.01% to 0.5%, generally affecting the population in between 10 – 40 years of age1. CT and MRI scan of brain are the important noninvasive diagnostic tools for the brain AVM, but cerebral angiography remains the ‘gold standard’ for detecting the micro vascular architecture of the AVM2. Treatment modalities include endovascular embolization, gamma knife stereotactic radio surgery and surgical resection. Each treatment alone or in combination has various pros and cons in terms of prognosis and complications.

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