A new classification system for malformations of the internal auditory meatus, cochlear nerve canal and cochlear nerve - 17/09/14
Résumé |
But de la présentation |
The present study aims to restudy the correlation between the internal auditory meatus (IAM), the cochlear nerve canal (CNC), the cochlear nerve (CN) and inner ear malformations.
Matériel et méthodes |
The abnormal diameter of the IAM, CNC and CN in patients with any kind of inner ear malformations were evaluated using multi-slice spiral computed tomography (MSCT) (37 patients) and magnetic resonance imaging (MRI) (18 patients).
Résultats |
Of 37 MSCT-diagnosed patients, 2 had IAM atresia, 11 IAM stenosis, 22 enlarged IAM, and 2 normal IAM with an abnormal CN. MRI diagnoses of 18 patients revealed 8 cases of aplastic CN, 6 hypoplastic CN, and 4 normal CN. CNC stenosis was associated with CN hypoplasia (P<0.001). Patients with absent or stenotic IAM had less CN development than those with normal or enlarged IAM (P=0.001).
Conclusion |
We propose a modification of existing classification systems with a view to distinguishing malformations of the IAM, CNC and CN.
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Vol 131 - N° 4S
P. A143 - octobre 2014 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.