View source for Accessory auricle

{{Infobox disease
 | Name           = Accessory auricle
 | Image          = 
 | Caption        = 
 | DiseasesDB     = 
 | ICD10          = {{ICD10|Q|17|0|q|10}}
 | ICD9           = {{ICD9|744.1}}
 | ICDO           = 
 | OMIM           = 610420
 | MedlinePlus    = 
 | eMedicineSubj  = 
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}}
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 degress of development, ranging from an '''ear tag''', '''preauricular appendage''', '''preauricular tag''', '''accessory tragus''', to [[supernumerary]] ears or polyotia.<ref name="Lam">{{Cite pmid|18035991}}</ref> It is a relatively common [[Congenital abnormality|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)<ref name="Konas">{{Cite pmid|16877912}}</ref> and with [[Wildervanck syndrome]].<ref name="Tadini">{{Cite pmid|8493161}}</ref><ref name="Gao">{{Cite pmid|2206506}}</ref><ref name="Resnick">{{Cite pmid|7204730}}</ref> There may also be an association with [[congenital cartilaginous rest of the neck]].

== Signs and symptoms ==
The general presentation is of a skin-covered nodule, papule or nodule of the skin surface, usually immediately anterior to the auricle. However, it may be anywhere within the periauricular tissues. Bilateral presentation can be seen.<ref name="Cosman">{{Cite pmid|8444054}}</ref><ref>"Preauricular sinus and accessory auricle. (Photoclinic)." Consultant Feb. 2002: 256+. Health Reference Center Academic. Web. 2 Nov. 2011.</ref><ref name="Jansen">{{Cite pmid|11085670}}</ref><ref name="Brownstein">{{Cite pmid|5131708}}</ref><ref name="pmid16734313">{{cite journal |author=Hodges FR, Sahouria JJ, Wood AJ |title=Accessory tragus: A report of 2 cases |journal=J Dent Child (Chic) |volume=73 |issue=1 |pages=42–4 |year=2006 |pmid=16734313 |doi= |url=}}</ref>

== Pathology findings ==
[[File:Ear Accessory Auricle LDRT.tif|thumb|An intermediate power of a microscopic view of an accessory auricle.]]
The lesions presents as a nodule or papule, either sessile or pedunculated. They may be soft or have a cartilaginous structure. By histologic examination, it is a recapitulation of normal external auricle. There will be skin, cartilaginous structures, and cartilage (although the later is not seen in all variants of this disorder).<ref name="Jansen">{{Cite pmid|11085670}}</ref><ref name="Brownstein">{{Cite pmid|5131708}}</ref>

== Differential diagnoses ==
These structures are distinctly different from [[squamous papilloma]] and benign [[teratoma]].

== Management ==
Simple surgical excision is curative.<ref name="Pan">{{Cite pmid|19617017}}</ref>

== Epidemiology ==
These lesions usually present in neonates, although they may not come to clinical attention until adulthood (for cosmetic reasons). There is no gender predilection. They are present in approximately 3-6 per 1000 live births.<ref name="Bolognia">{{cite book |author=Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. |title=Dermatology: 2-Volume Set |publisher=Mosby |location=St. Louis |year=2007 |pages= |isbn=1-4160-2999-0 |oclc= |doi= |accessdate=| page=894}}</ref>

== See also ==
* [[List of cutaneous conditions]]

== References ==
{{reflist}}

== Further reading ==
{{cite book |author=Lester D. R. Thompson, Bruce M Wenig |title=Diagnostic Pathology: Head and Neck: Published by Amirsys |publisher=Lippincott Williams & Wilkins |location=Hagerstown, MD |year=2011 |pages=7:2–3 |isbn=1-931884-61-7 |oclc= |doi= |accessdate=}}

{{Congenital malformations and deformations of ears}}

{{DEFAULTSORT:Accessory Tragus}}
[[Category:Ear]]
[[Category:Cutaneous congenital anomalies]]
[[Category:Genetic disorders with OMIM but no gene]]
[[Category:Diseases of the ear and mastoid process]]