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Updated: Jan 8, 2026
Comprehensive Endovascular and Open Surgical Management of Cerebral Arteriovenous Malformations
Published on: October 20, 2017
Complicación infecciosa inesperada tras embolización de MAV: absceso cerebral por E. coli
Andrii Netliukh1,2,3, Andrian Sukhanov1,3, Nana Tchantchaleishvili2,4
11st Lviv Territorial Medical Union, Lviv, Ukraine.
Background:
Brain arteriovenous malformations (AVMs) are rare vascular anomalies managed with surgery, radiosurgery, or endovascular embolization. Post-embolization intracranial infections are extremely uncommon, especially Escherichia coli abscesses in immunocompetent adults.
Case Presentation:
We report a 37-year-old man with a giant left frontal AVM treated with staged Onyx® embolization. One month after the final session, he developed a left frontal brain abscess with motor aphasia and right-sided hemiparesis. Cultures grew hemolytic E. coli sensitive to multiple antibiotics. Recurrence after initial drainage necessitated complete AVM and nidus resection, followed by prolonged targeted antibiotic therapy, leading to resolution and neurological recovery.
Literature Review:
Intracranial E. coli infections and post-AVM embolization abscesses are rare, typically associated with systemic or local immunosuppression. Our case is among the first describing hemolytic E. coli abscess after Onyx® embolization in a healthy adult.
Conclusion:
Retained embolic material, local inflammation, and blood-brain barrier disruption may facilitate infection. Early recognition and total removal, and prolonged targeted antibiotics are crucial to prevent recurrence and ensure favorable outcomes.
