Article ID: cr.2021-0033
Objective: We report a case of internal coil trapping for a ruptured intrameatal aneurysm (AN) arising from the meatal loop of the anterior inferior cerebellar artery (AICA) .
Case Presentation: A 92-year-old female patient presenting with sudden headache, dizziness and vomiting was transferred to our department. Computed tomography (CT) showed subarachnoid hemorrhage, and digital subtraction angiography (DSA) and head 3D-CTA showed a 3.6 mm fusiform AN arising from the left AICA in the left internal auditory meatus. Considering the location of the AN, age and general condition, internal trapping with coils was performed.
Conclusion: For the intrameatal AICA AN, clipping or coil embolization may be difficult, and trapping is sometimes an option. Internal coil trapping is a feasible treatment option, but infarction in the AICA region should be considered.
