RT Journal Article
SR Electronic
T1 Management of Anterior Inferior Cerebellar Artery Aneurysms: Endovascular Treatment and Clinical Outcome
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 159
OP 164
DO 10.3174/ajnr.A2360
VO 32
IS 1
A1 S.H. Suh
A1 D.J. Kim
A1 D.I. Kim
A1 B.M. Kim
A1 T.-S. Chung
A1 C.K. Hong
A1 J.Y. Jung
YR 2011
UL http://www.ajnr.org/content/32/1/159.abstract
AB BACKGROUND AND PURPOSE: AICA aneurysms are rare and a challenge to treat surgically. We present our experience of the angiographic results and the clinical outcomes for 9 AICA aneurysms treated by EVT. MATERIALS AND METHODS: Between 1997 and 2009, EVT was attempted for 9 AICA aneurysms. Six patients presented with SAH, and 3 aneurysms were found incidentally. The location of the aneurysms was the proximal AICA in 7 and the distal AICA in 2. Five aneurysms originated from an AICA-PICA variant. Clinical outcomes and procedural complications were evaluated, and angiography was performed 6, 12, and 24 months after embolization to confirm recanalization of the coiled aneurysm. RESULTS: EVT was technically successful in 7 patients (78%). Surgical trapping was performed in 1 patient after failure of EVT, and another aneurysm occluded spontaneously, along with the parent artery during EVT. In 7 patients, the AICAs had good patency on postoperative angiography. Stent-assisted coiling was performed in 3 patients. Follow-up angiographies were performed in 7 patients and showed no evidence of recanalization or progressive occlusion with further thrombosis except in 1 patient. There was no evidence of aneurysm rupture during the follow-up period, and 8 patients were able to perform all usual activities (mRS score, 0–1). CONCLUSIONS: EVT may provide a feasible and safe option as an alternative, though a microsurgical option is initially considered for the management of AICA aneurysms. Further follow-up and more experience are also necessary. AICAanterior inferior cerebellar arteryAVMarteriovenous malformationBAbasilar arteryCOcomplete occlusionCxprocedural complicationEVDexternal ventricular drainageEVTendovascular therapyF/Ufollow-up periodHHHunt and Hess scaleIOincomplete occlusionmRSmodified Rankin ScaleNAnot availableOocclusionPpreservationPICAposterior inferior cerebellar arterySAHsubarachnoid hemorrhageTIAtransient ischemic accidentTxtreatmentVAvertebral artery