LAUSR

BACKGROUND The use of non-adhesive liquid embolic agents (NALEAs) has gained great popularity in the treatment of brain vascular malformations with a lower rate of local complications than surgery. However, we describe the formation of brain abscesses following endovascular treatment of a brain arteriovenous malformation (bAVM) and how important removal of the NALEAs was in the treatment of these abscesses. CASE DESCRIPTION A 68-year-old male presented with seizures after being treated for an unruptured bAVM using Squid™ (Emboflu), a NALEA. Radiologic imaging revealed brain lesions suspicious of abscesses around the previously treated bAVM. A surgical excision of the bAVM and the embolized material was performed as well as drainage of the brain abscesses. Bacterial cultures were positive for Enterococcus faecalis and the patient left the hospital with an appropriate antibiotic regimen without new deficits. CONCLUSIONS This is the first reported case of a bAVM treated with Squid™ (Emboflu) complicated with brain abscesses, a rare but very serious complication. This complication should be treated not only using antibiotherapy but with complete safe removal of the embolic material.