Vestibular paroxysmia: Clinical features and imaging findings; a literature review - 14/08/21
This article has been published in an issue click here to access
Highlights |
• | Neurovascular compression syndromes are caused by contact between a vessel and a neural structure, causing symptoms depending on the function of the affected cranial nerve. |
• | The transition zone, where the myelin of the central nervous system transits to peripheral myelin (from Schwann cells to oligodendroglial cells) is the most vulnerable to compression. |
• | Vestibular paroxysmia is a rare syndrome caused by neurovascular compression of the eighth cranial nerve. |
• | MRI has been used for identifying the site of neurovascular compression and more specifically CISS sequence has been found to be the most reliable to image the neurovascular contact. |
Abstract |
According to the definition of neurovascular compression syndromes (NVCS), a vascular structure in direct contact with a cranial nerve is causing mechanical irritation of the neural tissue producing correlating symptoms. Vestibular paroxysmia is an example of a neurovascular compression which is caused by neurovascular contact between the eighth cranial nerve and a vessel. It is crucial to understand the unique anatomy of the vestibulocochlear nerve in order to study the syndrome which is the result of its compression. More specifically, the long transitional zone between central and peripheral myelin plays a central role in clinical significance, as the transitional zone is the structure most prone to mechanical injury. Imaging techniques of the eighth cranial nerve and the surrounding structures are substantial for the demonstration of clinically significant cases and potential surgical decompression.
The goal of the current review is to present and study the existing literature on vestibular paroxysmia and to search for the most appropriate imaging technique for the syndrome.
An extensive literature search of PubMed database was performed, and the studies were ranked based on evidence-based criteria, followed by descriptive statistics of the data. The present analysis indicates that 3D CISS MRI sequence is superior to any other sequence, in the most studies reviewed, regarding the imaging of neurovascular compression of the eighth cranial nerve.
El texto completo de este artículo está disponible en PDF.Keywords : Vestibular paroxysmia, 3D CISS MRI, Vertigo, Vestibular disorders, Neurovascular compression syndromes
Abbreviations : CISS, 3D CISS MRI, NVCS, CPA, CN, SOM, TZ, SCA, AICA, PICA, BPPV, EEG, MS, CSF, ICVD, ENG, NVC, VA, 3DFT-CISS, 3DFT-FISP, TSE, FSE, FLAIR, TOF, MRA, IAC, CT, RF, NMR, TR, SSFP
Esquema
This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. |
Bienvenido a EM-consulte, la referencia de los profesionales de la salud.
El acceso al texto completo de este artículo requiere una suscripción.
¿Ya suscrito a @@106933@@ revista ?