Objective: To compare the prevalence of cardiovascular risk factors (CVRF) in patients with superior vestibular neuritis (SVN) versus the general French population, and to examine the possibility of vascular etiology in acute superior vestibular deficit. Material and methods: A single-center retrospective study compared the prevalence of hypercholes-terolemia, hypertension, diabetes, smoking, cardiovascular disease and atrial fibrillation between patients with SVN and the French general population. Inclusion criteria comprised: rotatory vertigo last-ing several days, without hearing impairment or neurological signs, with anterior and lateral semicircular canal involvement on video-Head-Impulse-Test (vHIT). A senior radiologist analyzed superior vestibular nerve and inner ear structure enhancement on cerebellopontine MRI. Results: One hundred and eighteen cases of SVN were included from May 2016 to February 2020. Sta-tistical analyses concerned 106 cases. The SVN population had significantly less hypercholesterolemia (RR = 0.40) than the general French population. There was no significant difference concerning other CVRFs. Superior vestibular nerve enhancement was observed on 84% of MRIs. Conclusion: Prevalence of CVRF was not higher in patients with SVN than in the general population. The present study highlighted involvement of the superior vestibular nerve more than of the anterior vestibular artery in SVN. (c) 2022 Elsevier Masson SAS. All rights reserved.

Purpose To evaluate the value of diffusion-weighted imaging and dynamic contrast-enhanced MRI for the diagnosis of parotid gland tumors. Methods Retrospective review of patients with surgically treated parotid tumors between January 2009 and June 2020, who underwent a preoperative parotid gland MRI including standard morphological sequences, diffusion-weighted echoplanar imaging with apparent diffusion coefficient measurement and T1-weighted gadolinium-enhanced dynamic MRI sequences with Fat Saturation. The lesion was classified between malignant vs benign and precisions regarding its histological type were given when possible. Imaging findings were compared with pathology results. Results Inclusion of 133 patients (mean age: 53 years). Multiparametric MRI had a sensitivity of 90.3%, a specificity of 77.5%, an overall accuracy of 80.5%, a positive predictive value of 54.9% and a negative predictive value of 96.3% to differentiate benign parotid tumor from malignant ones. Specificity (85.5%) and positive predictive value (67.6%) were improved for cases, where anatomical and functional MRI characteristics were conclusive and consistent with clinical findings. Conclusions Combining diffusion-weighted and gadolinium-enhanced dynamic sequences, in addition to morphological ones enables high (> 90%) sensitivity to detect malignant parotid gland tumors. It also gives the possibility to characterize pleomorphic adenomas and Warthin tumors and to avoid fine-needle aspiration in cases of typical imaging presentation and reassuring clinical findings.

Comparer la prévalence des facteurs de risque cardiovasculaire (FDRCV) chez des personnes atteintes d’une névrite vestibulaire supérieure (NVS) par rapport à la population générale française afin d’évoquer la possibilité d’une étiologie vasculaire lors d’une atteinte aiguë du territoire vestibulaire supérieur. Cette étude rétrospective monocentrique étudiait la prévalence de l’hypercholestérolémie, de l’hypertension artérielle, du diabète, du tabagisme, des maladies cardiovasculaires, et de l’arythmie cardiaque par fibrillation atriale chez des cas de NVS, et dans la population générale française. Les critères d’inclusion étaient la présence d’un vertige rotatoire durant plusieurs jours, sans atteinte auditive ni signe neurologique, avec une atteinte des canaux semi-circulaires antérieur et latéral au vidéo-Head-Impulse-Test (VHIT). Le rehaussement du nerf vestibulaire supérieur et des structures de l’oreille interne étaient analysés sur une IRM précoce des angles ponto-cérébelleux par un radiologue senior. Cent dix-huit cas de NVS étaient inclus de mai 2016 à février 2020. Les analyses statistiques concernaient 106 cas. La population de NVS présentait moins d’hypercholestérolémie (RR = 0,40) que la population générale française. Il n’y avait pas de différence concernant les autres FDRCV. Un rehaussement du nerf vestibulaire supérieur sur la séquence FLAIR était observé dans 84 % des IRM. Les patients atteints de NVS n’étaient pas plus porteurs de FDRCV que la population générale. Cette étude apporte plus d’arguments en faveur d’une atteinte du nerf vestibulaire supérieur que de l’artère vestibulaire antérieure dans la NVS.