Evidence map›Paper›PMID 42142061›Full record

ArticleThe Laryngoscope2026

Partitioned Internal Auditory Canal: Association With Cochlear Aperture Anomalies.

Levent Sennaroğlu, Emel Tahir

Abstract read
In one paragraph

Article in The Laryngoscope, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

2 authors.

Levent SennaroğluDepartment of Otolaryngology, Hacettepe University School of Medicine, Ankara, Turkey.
Emel TahirOndokuz Mayıs University School of Medicine Department of Otolaryngology, Samsun, Turkey.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo investigate the association between partitioned internal auditory canal (IAC) and other inner ear abnormalities.

methodsThe temporal bone computed tomography (CT) and magnetic resonance imaging (MRI) findings of ears with partitioned IAC were retrospectively analyzed. The IAC was considered narrow if its mid-portion diameter < 2 mm. Cochlear aperture (CA) was classified as normal (diameter more than 1.5 mm), stenotic (diameter < 1.5 mm), or atretic. The MRI images examined the cochlear nerve (CN). The CN's diameter was compared with the ipsilateral facial nerve to determine if it was normal, hypoplastic, or aplastic.

resultsPartitioned IAC was observed in 1.1% of ears with normal CA, 14.9% of ears with stenotic CA, and 20.9% of ears with atretic CA. Forty-eight right and 37 left ears with partitioned IAC were examined. The most common CA anomaly accompanying partitioned IAC was CA stenosis, while more than half of the cochleae were of normal size. IAC was mostly narrow in ears with partitioned IAC. When the CN was examined, partitioned IAC was almost always accompanied by CN aplasia (more frequently) or hypoplasia.

conclusionThis study demonstrates that CN deficiency, associated with CA abnormalities, may cause the aberrant location of the meatal segment of the facial nerve in a separate bony canal. Partitioned IAC is an inner ear malformation characterized by CN deficiency. LEVEL OF EVIDENCE: 4:

Indexed as

CochleaEar, InnerTemporal BoneAdolescentAdultChildChild, PreschoolCochlear NerveFemaleHumansMagnetic Resonance ImagingMaleRetrospective StudiesTomography, X-Ray ComputedYoung Adultcochleacochlear implantationcochlear nervefacial nerveinner earinternal auditory canaltemporal bone

Identifiers

PMID42142061
PMCPMC13569618

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.