Abstract
A 16-year-old male adolescent who presented with vomiting and headache and in the emergency department had a loss of consciousness, was discovered to have a large mass compressing the brainstem. CT scan showed two adjacent mass lesions. Digital subtraction angiography (DSA) revealed a giant aneurysm in the posterior medial choroidal artery, subsequently embolized with Guglielmi detachable coils (GDCs). Ten GDCs were used to embolize the aneurysm and the distal aspect of its parent artery. Postembolization DSA confirmed complete embolization of the aneurysm. Endovasular embolization of giant aneurysms in the medial posterior choroidal artery with GDCs is technically feasible and represents a successful therapeutic option. In unruptured giant intracranial aneurysms, simultaneous packing of the aneurysm with coils and occlusion of the distal parent artery can have a good outcome.
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