Intrameatal aneurysm of the anterior inferior cerebellar artery

Zotta, D.; Stati, Giovanni; Paulis, Danilo De; Galzio, Renato

doi:10.1016/j.jocn.2010.06.019

Cited by 15 publications

(26 citation statements)

References 14 publications

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“…Distal AICA-PICA variant aneurysms are very rare with fewer than 10 cases reported till date. [1][2][3][4][5][6][7][8] Intrameatal location for AICA aneurysms is also uncommon. 9 The AICA during its course has an abrupt turn at the internal auditory meatus and is in close relation to cranial nerve VII and VIII at that point.…”

Section: Discussionmentioning

confidence: 99%

“…As intrameatal location is not a branching point, the possible etiology for aneurysm might be dissection or hemodynamic stress due to accentuated turn in the vessel. 7 Surgical management of distal AICA or AICA-PICA variant aneurysms and intrameatal aneurysms has been proposed as first-line management due to concerns regarding catheter navigation and possible adverse effects of parent vessel occlusion. 7,10,11 An occipital to AICA bypass has also been proposed as part of management plan.…”

Section: Discussionmentioning

confidence: 99%

“…7 Surgical management of distal AICA or AICA-PICA variant aneurysms and intrameatal aneurysms has been proposed as first-line management due to concerns regarding catheter navigation and possible adverse effects of parent vessel occlusion. 7,10,11 An occipital to AICA bypass has also been proposed as part of management plan. 1 Surgical management has high chances for postoperative morbidity due to deep location of aneurysm, proximity of important neurological structures to the aneurysm, and lack of expertise due to rarity of such aneurysms.…”

Section: Discussionmentioning

confidence: 99%

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Successful Endovascular Management of Intra-meatal Anterior Inferior Cerebellar Artery–Posterior Inferior Cerebellar Artery Variant Aneurysm

Bohra¹,

deSouza²,

Huded³

2018

J Clin Interv Radiol ISVIR

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Anterior inferior cerebellar artery–posterior inferior cerebellar artery (AICA-PICA) variant or common trunk is seen frequently in vertebral angiograms as PICA is found to be hypoplastic or absent in approximately 20 to 25% of patients. There have been very few case reports of aneurysm arising in AICA-PICA variant. Intrameatal AICA aneurysms are also rare, with no reports involving AICA-PICA variant till date. Neurosurgical approach and clipping have been proposed as first-line treatment option for intrameatal AICA aneurysms. The authors report a case of a young woman presenting with subarachnoid hemorrhage, found to have a right AICA-PICA variant aneurysm in intrameatal location. The patient underwent coiling with parent vessel occlusion after an unsuccessful attempt at surgical management of the same. She recovered without any postprocedure complication. This case report highlights the fact that endovascular approach can be used to manage distal AICA/AICA-PICA variant or intrameatal aneurysm with added advantage of avoiding the postprocedure complications associated with surgical management of the same.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Successful Endovascular Management of Intra-meatal Anterior Inferior Cerebellar Artery–Posterior Inferior Cerebellar Artery Variant Aneurysm

Bohra¹,

deSouza²,

Huded³

2018

J Clin Interv Radiol ISVIR

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“…The most commonly used overall treatment is surgical clipping with AICA preservation 3–6 8–10 12 18 21 22 27. Other surgical approaches include surgical trapping3 9 13 18 and occipital to AICA bypass 29.…”

Section: Discussionmentioning

confidence: 99%

Republished: Ruptured distal AICA pseudoaneurysm presenting years after vestibular schwannoma resection and radiation

McNeill

Mocco

Berenstein

et al. 2015

J NeuroIntervent Surg

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SUMMARYDistal anterior inferior cerebellar artery (AICA) pseudoaneurysms are very rare lesions. Although cases have been previously reported, only a few have been reported as a result of vestibular schwannoma (VS) radiation, none have been reported as a result of VS resection, and only one has been reported as treated with parent vessel occlusion (PVO) with n-butyl cyanoacrylate (nBCA). We report a case of a 65-year-old man with a history of right-sided VS surgery and radiation who presented years later with a ruptured pseudoaneurysm of the distal right AICA and was treated with endovascular PVO using nBCA. The aneurysm was completely obliterated and the patient had no worsening of symptoms or neurological exam. The case illustrates a very rare complication of VS surgery and radiation as well as an effective treatment for distal AICA aneurysms. BACKGROUND

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“…The retrosigmoid approach has been used to treat a giant completely thrombosed aneurysm located in the premeatal portion of the AICA (Figure 24) and of an aneurysm of the labyrinthine artery, intrameatally located and thus requiring the drilling of the posterosuperior wall of the meatus to be exposed ( Figure 25) [Zotta, 2011]. It has also been used in 1 case of BA/AICA aneurysm, but for this kind of lesion this approach seems inadequate because it only provides a narrow opening with an angle of attack parallel to the petrous bone with a limited exposure of the anterolateral wall of the basilar tract.…”

Section: Retrosigmoid Approachmentioning

confidence: 99%