Rare diseases · Sign or symptom
Atresia of the external auditory canal
Absent ear canal
HP:0000413
What it means
Absence or failure to form of the external auditory canal.
Rare diseases that can present with this39
Very common80–99%
17- 14q22q23microdeletion syndrome
- Branchiogenic deafness syndrome
- Cleft palate-stapes fixation-oligodontia syndrome
- Conductive deafness-ptosis-skeletal anomalies syndrome
- Cooper-Jabs syndrome
- Cornelia de Lange syndrome
- Coxoauricular syndrome
- Ear-patella-short stature syndrome
- External auditory canal atresia-vertical talus-hypertelorism syndrome
- Holoprosencephaly-radial heart renal anomalies syndrome
- Hypertelorism-microtia-facial clefting syndrome
- Johnson neuroectodermal syndrome
- Lateral meningocele syndrome
- Mycophenolate mofetil embryopathy
- Neurofaciodigitorenal syndrome
- Verloove Vanhorick-Brubakk syndrome
- XY type gonadal dysgenesis-associated anomalies syndrome
Common30–79%
13- Acrootoocular syndrome
- BOR syndrome
- Branchiootic syndrome
- Cerebrocostomandibular syndrome
- Craniofacial microsomia
- Isotretinoin-like syndrome
- Mandibulofacial dysostosis-microcephaly syndrome
- Microtia
- Nager syndrome
- Oculoauriculovertebral spectrum with radial defects
- Pallister-Hall syndrome
- Pfeiffer syndrome type 2
- Treacher-Collins syndrome
Sometimes5–29%
8The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.
Part of the broader category
Also called: Absent auditory canals · Absent external auditory canals · Atresia of the external auditory canals · Atretic auditory canal · Atretic auditory canals · Atretic external auditory canal · Atretic external auditory canals · Auditory canal atresia
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Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.