Images in Clinical Medicine: Snake in the Brain

Giant intracranial aneurysm is defined as one larger than 2.5 cm in maximum diameter. Treatment of giant aneurysms has traditionally been associated with a higher morbidity and mortality rate than smaller lesions. Giant aneurysms are thought to represent about 5-8% of all intracranial aneurysms and their treatment involves a careful consideration of all the anatomical features involved. CASE REPORT A 45-year-old male presented to our emergency room with headache. Magnetic resonance imaging of the brain and magnetic resonance angiography showed a left occipital lobe giant arteriovenous malformation (AVM) (Fig 1 and 2).