Internal Auditory Canal Diverticula in Children: A Congenital Variant.
Adolescent
Age Factors
Anatomic Variation
Audiometry
Child
Child, Preschool
Diverticulum
/ complications
Ear, Inner
/ abnormalities
Female
Hearing Loss
/ diagnosis
Humans
Infant
Labyrinth Diseases
/ complications
Male
Prevalence
Retrospective Studies
Risk Factors
Temporal Bone
/ abnormalities
Tomography, X-Ray Computed
IAC diverticula
IAC diverticulum
congenital
internal auditory canal
otic capsule
temporal bone anatomy
Journal
The Laryngoscope
ISSN: 1531-4995
Titre abrégé: Laryngoscope
Pays: United States
ID NLM: 8607378
Informations de publication
Date de publication:
05 2021
05 2021
Historique:
revised:
27
10
2020
received:
16
08
2020
accepted:
03
11
2020
pubmed:
18
11
2020
medline:
8
5
2021
entrez:
17
11
2020
Statut:
ppublish
Résumé
Internal auditory diverticula in adults have been found to exist independent of otosclerosis, and in the presence of otosclerosis. We sought to determine the prevalence of internal auditory canal (IAC) diverticula in a pediatric cohort, to assess whether IAC diverticula are a risk factor for hearing loss, and the co-occurrence of otic capsule hypoattenuation. Retrospective review. A single-site retrospective review of high-resolution temporal bones computed tomography (CT) scans including the presence and size of diverticula and hypoattenuation of the otic capsule. Demographic, imaging, and audiometric data were collected and descriptively analyzed. Bivariate analysis of collected variables was conducted. Comparisons between sides in unilateral cases were also performed. 16/600 (2.7%; 95% CI [2.0%, 3.4%]) were found to have IAC diverticula. Six were bilateral. Thirty-one patients (5.2%) were found to have hypoattenuation of the otic capsule. There were no coincident cases of IAC diverticulum and hypoattenuation of the otic capsule. There was no association between the presence of IAC diverticula and age (P = .13). In six patients with unilateral diverticula, pure tone average (P = .42), and word recognition (P = .27) scores were not significantly different when compared to the normal, contralateral side. The prevalence of IAC diverticula in children is lower than the prevalence in adults. IAC diverticula in children likely represent congenital variants of temporal bone anatomy. Similar to adult populations, there is evidence that IAC diverticula in children are likely not an independent risk factor for hearing loss. 4 Laryngoscope, 131:E1683-E1687, 2021.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
E1683-E1687Informations de copyright
© 2020 American Laryngological, Rhinological and Otological Society Inc, "The Triological Society" and American Laryngological Association (ALA).
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