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High-resolution CT of the temporal bone in dysplasia of the auricle and external auditory canal.
AJNR Am J Neuroradiol. 1997 Jan; 18(1):53-65.AA

Abstract

PURPOSE

To determine CT findings in the external, middle, and inner ear of patients with microtia and external auditory canal dysplasia.

METHODS

We used high-resolution CT, with multiplanar or axial 1-mm continuous sections, coronal or sagittal reformations, or low-dose spiral acquisitions, to examine 184 temporal bones of children with microtia.

RESULTS

In cases of minor microtia, auditory canal stenosis was the most common associated abnormality; in those with major microtia, atresia was predominant. Middle ear malformations depended on the severity of the auricular anomalies. Inner ear changes could also be noted. Ossicle dysplasias occurred in 98% of patients (stapes, 72%), absence of the oval window in 36%, labyrinthine malformations in 13%, closed round window in 6%, facial canal displacement in up to 75%, and aberrations of the vascular canal in 38% of patients with third-grade auricular deformity.

CONCLUSION

A variety of external, middle, and, less frequently, inner ear changes were detected in connection with microtia.

Authors+Show Affiliations

Institute of Radiology and Neuroradiology, Medical University, Lübeck, Germany.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

9010521

Citation

Mayer, T E., et al. "High-resolution CT of the Temporal Bone in Dysplasia of the Auricle and External Auditory Canal." AJNR. American Journal of Neuroradiology, vol. 18, no. 1, 1997, pp. 53-65.
Mayer TE, Brueckmann H, Siegert R, et al. High-resolution CT of the temporal bone in dysplasia of the auricle and external auditory canal. AJNR Am J Neuroradiol. 1997;18(1):53-65.
Mayer, T. E., Brueckmann, H., Siegert, R., Witt, A., & Weerda, H. (1997). High-resolution CT of the temporal bone in dysplasia of the auricle and external auditory canal. AJNR. American Journal of Neuroradiology, 18(1), 53-65.
Mayer TE, et al. High-resolution CT of the Temporal Bone in Dysplasia of the Auricle and External Auditory Canal. AJNR Am J Neuroradiol. 1997;18(1):53-65. PubMed PMID: 9010521.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - High-resolution CT of the temporal bone in dysplasia of the auricle and external auditory canal. AU - Mayer,T E, AU - Brueckmann,H, AU - Siegert,R, AU - Witt,A, AU - Weerda,H, PY - 1997/1/1/pubmed PY - 1997/1/1/medline PY - 1997/1/1/entrez SP - 53 EP - 65 JF - AJNR. American journal of neuroradiology JO - AJNR Am J Neuroradiol VL - 18 IS - 1 N2 - PURPOSE: To determine CT findings in the external, middle, and inner ear of patients with microtia and external auditory canal dysplasia. METHODS: We used high-resolution CT, with multiplanar or axial 1-mm continuous sections, coronal or sagittal reformations, or low-dose spiral acquisitions, to examine 184 temporal bones of children with microtia. RESULTS: In cases of minor microtia, auditory canal stenosis was the most common associated abnormality; in those with major microtia, atresia was predominant. Middle ear malformations depended on the severity of the auricular anomalies. Inner ear changes could also be noted. Ossicle dysplasias occurred in 98% of patients (stapes, 72%), absence of the oval window in 36%, labyrinthine malformations in 13%, closed round window in 6%, facial canal displacement in up to 75%, and aberrations of the vascular canal in 38% of patients with third-grade auricular deformity. CONCLUSION: A variety of external, middle, and, less frequently, inner ear changes were detected in connection with microtia. SN - 0195-6108 UR - https://www.unboundmedicine.com/medline/citation/9010521/High_resolution_CT_of_the_temporal_bone_in_dysplasia_of_the_auricle_and_external_auditory_canal_ L2 - http://www.ajnr.org/cgi/pmidlookup?view=long&pmid=9010521 DB - PRIME DP - Unbound Medicine ER -