Published online by Cambridge University Press: 02 December 2014
Among cases of cerebellopontine angle lesions, vascular lesions involving the internal auditory canal are extremely rare. We report a distal fusiform mycotic pseudoaneurysm of the anterior inferior cerebellar artery (AICA) that simulated an acoustic neuroma on presentation.
A 60-year-old woman was investigated for recent onset of acute dizziness. Laboratory and radiographic investigations are presented, as well as the surgical management of the patient and pathological examination of the aneurysm.
An exceptionally rare case of distal mycotic intracanalicular pseudoaneurysm of the AICA with intraluminal thrombus and fusiform anatomy is described. In our review of the literature (1966-present), only five other intracanalicular AICA-aneurysms were encountered, none of which were infectious in etiology. The possible pathophysiologic mechanisms of distal AICA-aneurysms are discussed along with the currently available literature.
Parmi les cas de lésions de l'angle ponto-cérébelleux, les lésions vasculaires impliquant le canal auditif interne (CM) sont extrêmement rares. Nous rapportons un cas de pseudo-anévrisme mycotique fusiforme de l'artère cérébelleuse inférieure et antérieure (ACIA) dont le mode de présentation simulait un neurinome acoustique.
Une femme âgée de 60 ans a été examinée pour un état vertigineux aigu d'apparition récente. Nous présentons les résultats des examens biochimiques et de radiologiques ainsi que le traitement chirurgical de la patiente et l'examen anatomopathologique de l'anévrisme.
Nous décrivons un cas extrêmement rare de pseudo-anévrisme intracanaliculaire mycotique fusiforme de l'ACIA distale avec thrombus intraluminal. Selon notre revue de la littérature de 1966 à nos jours, seulement cinq autres anévrismes intracanaliculaires de l'ACIA ont été rapportés et aucun d'eux n'était d'étiologie infectieuse. Nous discutons des mécanismes physiopathologiques possibles des anévrismes de l'ACIA distale et de la littérature sur le sujet.
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