• Sébastien Boissonneau, Thomas Graillon, Mikael Meyer, Herve Brunel, Stéphane Fuentes, and Henry Dufour.
• APHM, CHU Timone, Department of Neurosurgery, Marseille, France. Electronic address: sebastien.boissonneau@ap-hm.fr.
• World Neurosurg. 2018 Nov 1; 119: 353-357.

BackgroundInfectious aneurysm is a rare complication in intracranial aneurysm. Moreover, giant aneurysm is a rare entity in intracranial aneurysm. In the great majority of infectious intracranial aneurysms, vasculitis and/or endocarditis is associated.Case DescriptionHere, we report the case of an 83-year-old man who developed a giant infectious intracranial aneurysm on the anterior communicating artery. This patient had never shown any intracranial bleeding. A surgery was performed, and purulent liquid and aneurysm wall were removed during procedure. The bacteriologic analyses reported Campylobacter fetus.ConclusionsThis bacterium seems to be more and more frequent in North America and Europe, according to the current literature. Moreover, cases of mycotic extracranial aneurysm were reported. Here we report the first case of intracranial giant infectious aneurysm in an adult patient, without any endocarditis or vasculitis. This new entity could be the cause of a bacterial graft on an asymptomatic giant preexisting intracranial aneurysm or a consequence of campylobacteriosis.Copyright © 2018 Elsevier Inc. All rights reserved.

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