Matrix Science Medica

REVIEW ARTICLE
Year
: 2022  |  Volume : 6  |  Issue : 2  |  Page : 29--33

Vascular loop of anterior inferior cerebellar artery causing disabling tinnitus, vertigo, and hearing loss - A review


Santosh Kumar Swain 
 Department of Otorhinolaryngology and Head and Neck Surgery, IMS and SUM Hospital, Siksha “O” Anusandhan University, Bhubaneswar, Odisha, India

Correspondence Address:
Dr. Santosh Kumar Swain
Department of Otorhinolaryngology and Head and Neck Surgery, IMS and SUM Hospital, Siksha “O” Anusandhan University, K8 Kalinga Nagar, Bhubaneswar - 751 003, Odisha
India

The vascular anatomy of the anterior inferior cerebellar artery (AICA) is highly variable. In respect to the neurovascular relationship in the internal auditory canal (IAC), the AICA is intimately related with vestibulocochlear and facial nerve. Vascular loop of AICA, especially located in the IAC, is rare. This vascular loop of the IAC may result in the compression over the vestibulocochlear nerve. Microvascular compression of the eighth cranial nerve is an important cause for disabling tinnitus, vertigo, and hearing loss. Disabling tinnitus and vertigo due to intrameatal vascular loop of AICA compression, the vestibulocochlear nerve can be treated with help of drilling the internal acoustic meatus and separate the vascular loop from the vestibulocochlear nerve. The intrameatal AICA and vestibulocochlear nerve conflict produce specific pathological features and their surgical treatment is also invariably challenging. Decompression of the vestibulocochlear nerve by the opening of the IAC and transposition of the AICA is thought to be an effective treatment modality for radiologically confirmed cases with clinical presentations of unilateral sensorineural hearing loss and pulsatile tinnitus. The aim of this review article is to describe the details of vascular anatomy, etiopathology, clinical presentations, diagnosis, neurophysiology, and current treatment of the vascular loop of AICA in IAC which often pose challenge to the clinicians.


How to cite this article:
Swain SK. Vascular loop of anterior inferior cerebellar artery causing disabling tinnitus, vertigo, and hearing loss - A review.Matrix Sci Med 2022;6:29-33


How to cite this URL:
Swain SK. Vascular loop of anterior inferior cerebellar artery causing disabling tinnitus, vertigo, and hearing loss - A review. Matrix Sci Med [serial online] 2022 [cited 2022 Jun 24 ];6:29-33
Available from: https://www.matrixscimed.org/article.asp?issn=2521-0807;year=2022;volume=6;issue=2;spage=29;epage=33;aulast=Swain;type=0