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Accessory auricle : ウィキペディア英語版 | Accessory auricle
An accessory auricle is considered a developmental anomaly resulting from the persistence of a structure which variably recapitulates the normal external ear. == Classification == There may be several components or degrees of development, ranging from an ear tag, preauricular appendage, preauricular tag, accessory tragus, to supernumerary ears or polyotia . It is a relatively common congenital anomaly of the first branchial arch or second branchial arches. Other anomalies may be present concurrently, including cleft palate, cleft lip, or mandibular hypoplasia. There is a known association with Goldenhar syndrome (oculo-auriculo-vertebral syndrome) and with Wildervanck syndrome. There may also be an association with congenital cartilaginous rest of the neck.
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