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Abnormal auditory canal morphology

MedGen UID:
867433
•Concept ID:
C4021807
•
Anatomical Abnormality
Synonym: Abnormality of the auditory canal
 
HPO: HP:0000372

Definition

Any structural abnormality of the external acoustic tube (also known as the auditory canal). [from HPO]

Professional guidelines

PubMed

The diagnosis and treatment of a variant type of auricular sinus: postauricular sinus.
Pang J, Xiong H, Liao Q, Xu Y, Huang Q, Ou Y
Eur Arch Otorhinolaryngol 2019 Jul;276(7):1961-1967. Epub 2019 May 15 doi: 10.1007/s00405-019-05431-7. PMID: 31093733
Management of Cochlear Nerve Hypoplasia and Aplasia.
Freeman SR, Sennaroglu L
Adv Otorhinolaryngol 2018;81:81-92. Epub 2018 Apr 6 doi: 10.1159/000485542. PMID: 29794457
Management of Conductive Hearing Loss in Children.
Dougherty W, Kesser BW
Otolaryngol Clin North Am 2015 Dec;48(6):955-74. Epub 2015 Sep 8 doi: 10.1016/j.otc.2015.06.007. PMID: 26360369

Recent clinical studies

Etiology

Internal auditory canal volume in normal and malformed inner ears.
Bächinger D, Breitsprecher TM, Pscheidl A, Dhanasingh A, Mlynski R, Dazert S, Langner S, Weiss NM
Eur Arch Otorhinolaryngol 2023 May;280(5):2149-2154. Epub 2022 Oct 9 doi: 10.1007/s00405-022-07676-1. PMID: 36210370Free PMC Article
Congenital Aural Stenosis With Cholesteatoma.
Casazza GC, Jonas RH, Kesser BW
Otol Neurotol 2022 Mar 1;43(3):320-327. doi: 10.1097/MAO.0000000000003440. PMID: 34889827
Management of Cochlear Nerve Hypoplasia and Aplasia.
Freeman SR, Sennaroglu L
Adv Otorhinolaryngol 2018;81:81-92. Epub 2018 Apr 6 doi: 10.1159/000485542. PMID: 29794457
The auditory characteristics of children with inner auditory canal stenosis.
Ai Y, Xu L, Li L, Li J, Luo J, Wang M, Fan Z, Wang H
Acta Otolaryngol 2016 Jul;136(7):687-91. Epub 2016 Mar 16 doi: 10.3109/00016489.2016.1152505. PMID: 26981851
Etiology and genes.
Matsunaga T
Adv Otorhinolaryngol 2014;75:2-8. Epub 2013 Oct 11 doi: 10.1159/000350491. PMID: 24135340

Diagnosis

Internal auditory canal volume in normal and malformed inner ears.
Bächinger D, Breitsprecher TM, Pscheidl A, Dhanasingh A, Mlynski R, Dazert S, Langner S, Weiss NM
Eur Arch Otorhinolaryngol 2023 May;280(5):2149-2154. Epub 2022 Oct 9 doi: 10.1007/s00405-022-07676-1. PMID: 36210370Free PMC Article
Management of Cochlear Nerve Hypoplasia and Aplasia.
Freeman SR, Sennaroglu L
Adv Otorhinolaryngol 2018;81:81-92. Epub 2018 Apr 6 doi: 10.1159/000485542. PMID: 29794457
Audiometry.
Kaga K
Adv Otorhinolaryngol 2014;75:20-3. Epub 2013 Oct 11 doi: 10.1159/000350596. PMID: 24135344
Imaging diagnosis.
Takegoshi H
Adv Otorhinolaryngol 2014;75:13-9. Epub 2013 Oct 11 doi: 10.1159/000350594. PMID: 24135343
Tympanometry.
Shanks JE
Ear Hear 1984 Sep-Oct;5(5):268-80. doi: 10.1097/00003446-198409000-00003. PMID: 6542036

Therapy

Vestibular hydrops in patients with semicircular canal malformation.
Niu Y, Chen W, Lin M, Sha Y
Auris Nasus Larynx 2023 Oct;50(5):727-732. Epub 2023 Feb 4 doi: 10.1016/j.anl.2023.01.009. PMID: 36740469
Isolated Internal Auditory Canal Diverticula: A Normal Anatomic Variant Not Associated with Sensorineural Hearing Loss.
Mihal DC, Feng Y, Kodet ML, Lohse CM, Carlson ML, Lane JI
AJNR Am J Neuroradiol 2018 Dec;39(12):2340-2344. Epub 2018 Nov 15 doi: 10.3174/ajnr.A5862. PMID: 30442698Free PMC Article
Blowout fractures - clinic, imaging and applied anatomy of the orbit.
Felding UNA
Dan Med J 2018 Mar;65(3) PMID: 29510812
A meta-analysis of the long-term hearing outcomes and complications associated with atresiaplasty.
Li CL, Dai PD, Yang L, Zhang TY
Int J Pediatr Otorhinolaryngol 2015 Jun;79(6):793-797. Epub 2015 Apr 9 doi: 10.1016/j.ijporl.2015.03.032. PMID: 25912684
Cochlear implantation in children with anomalous cochleovestibular anatomy.
Papsin BC
Laryngoscope 2005 Jan;115(1 Pt 2 Suppl 106):1-26. doi: 10.1097/00005537-200501001-00001. PMID: 15626926

Prognosis

Otopathologic Abnormalities in CHARGE Syndrome.
da Costa Monsanto R, Knoll RM, de Oliveira Penido N, Song G, Santos F, Paparella MM, Cureoglu S
Otolaryngol Head Neck Surg 2022 Feb;166(2):363-372. Epub 2021 Apr 20 doi: 10.1177/01945998211008911. PMID: 33874787
Isolated Myxoma of the External Auditory Canal: A Case Report and Literature Review.
Hasnaoui M, Masmoudi M, Belaid T, Mighri K
Ear Nose Throat J 2021 Dec;100(10_suppl):991S-994S. Epub 2020 Jun 11 doi: 10.1177/0145561320927913. PMID: 32525735
Bony cochlear nerve canal and internal auditory canal measures predict cochlear nerve status.
Tahir E, Bajin MD, Atay G, Mocan BÖ, Sennaroğlu L
J Laryngol Otol 2017 Aug;131(8):676-683. Epub 2017 Jun 1 doi: 10.1017/S0022215117001141. PMID: 28566097
Acoustic neuroma. Assessment and management.
Ho SY, Kveton JF
Otolaryngol Clin North Am 2002 Apr;35(2):393-404, viii. doi: 10.1016/s0030-6665(02)00004-x. PMID: 12391625
Anatomic variations and anomalies involving the facial canal.
Nager GT, Proctor B
Otolaryngol Clin North Am 1991 Jun;24(3):531-53. PMID: 1762775

Clinical prediction guides

Internal Auditory Canal Diverticula in Children: A Congenital Variant.
Muelleman TJ, Kavookjian H, Asmar J, Patel K, Nielsen D, Summers K, Tracy M, Noel-MacDonnell J, Staecker H, Ledbetter L, Weatherly R
Laryngoscope 2021 May;131(5):E1683-E1687. Epub 2020 Nov 17 doi: 10.1002/lary.29278. PMID: 33200834
Management of Cochlear Nerve Hypoplasia and Aplasia.
Freeman SR, Sennaroglu L
Adv Otorhinolaryngol 2018;81:81-92. Epub 2018 Apr 6 doi: 10.1159/000485542. PMID: 29794457
Blowout fractures - clinic, imaging and applied anatomy of the orbit.
Felding UNA
Dan Med J 2018 Mar;65(3) PMID: 29510812
Bony cochlear nerve canal and internal auditory canal measures predict cochlear nerve status.
Tahir E, Bajin MD, Atay G, Mocan BÖ, Sennaroğlu L
J Laryngol Otol 2017 Aug;131(8):676-683. Epub 2017 Jun 1 doi: 10.1017/S0022215117001141. PMID: 28566097
The auditory characteristics of children with inner auditory canal stenosis.
Ai Y, Xu L, Li L, Li J, Luo J, Wang M, Fan Z, Wang H
Acta Otolaryngol 2016 Jul;136(7):687-91. Epub 2016 Mar 16 doi: 10.3109/00016489.2016.1152505. PMID: 26981851

Recent systematic reviews

Genotype-phenotype associations in microtia: a systematic review.
Wahdini SI, Idamatussilmi F, Pramanasari R, Prawoto AN, Wungu CDK, Putri IL, Gunadi
Orphanet J Rare Dis 2024 Apr 9;19(1):152. doi: 10.1186/s13023-024-03142-9. PMID: 38594752Free PMC Article
Cholesteatoma in Congenital Aural Atresia and External Auditory Canal Stenosis: A Systematic Review.
Chan CY, Karmali SA, Arulanandam B, Nguyen LHP, Duval M
Otolaryngol Head Neck Surg 2023 Sep;169(3):449-453. Epub 2022 Apr 18 doi: 10.1177/01945998221094230. PMID: 35439089
Spontaneous Congenital Perilabyrinthine Cerebrospinal Fluid Fistulas.
Lovin BD, Appelbaum EN, Makoshi L, Whitehead WE, Sweeney AD
Ann Otol Rhinol Laryngol 2021 Dec;130(12):1360-1368. Epub 2021 Apr 9 doi: 10.1177/00034894211007242. PMID: 33834882
Accessory Auricles: Systematic Review of Definition, Associated Conditions, and Recommendations for Clinical Practice.
Amirhassankhani S, Lloyd MS
J Craniofac Surg 2018 Mar;29(2):372-375. doi: 10.1097/SCS.0000000000004201. PMID: 29239919
Pediatric superior semicircular canal dehiscence: illustrative case and systematic review.
Lagman C, Ong V, Chung LK, Elhajjmoussa L, Fong C, Wang AC, Gopen Q, Yang I
J Neurosurg Pediatr 2017 Aug;20(2):196-203. Epub 2017 May 26 doi: 10.3171/2017.3.PEDS1734. PMID: 28548616

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