Congenital auricular fistula, Congenital preauricular fistula, Ear pit,[1]: 782 or a Preauricular cyst[2]
Preauricular sinus on right ear
Specialty
Otorhinolaryngology
Preauricular sinuses and preauricular cysts are two common congenital malformations. Each involves the external ear. The difference between them is that a cyst does not connect with the skin, but a sinus does. [3] Frequency of preauricular sinus differs depending the population: 0.1–0.9% in the US, 0.9% in the UK, and 4–10% in Asia and parts of Africa.[4]
Preauricular sinuses are inherited features, and frequently appear next to both ears.[5] Preauricular sinuses can be associated with other defects that are not visible, one example being branchio-oto-renal syndrome.[6]
^Freedberg IM, Fitzpatrick TB (2003). Fitzpatrick's Dermatology in General Medicine (6th ed.). McGraw-Hill. ISBN 978-0-07-138076-8.
^Rapini RP, Bolognia JL, Jorizzo JL (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. ISBN 978-1-4160-2999-1.
^Thatcher, A.L. (2022). Congenital and inflammatory neck masses in children. In M. Lesperance (Ed.), Cummings Pediatric Otolaryngology, 23, 308-321.
^Kim HJ, Lee JH, Cho HS, Moon IS (September 2012). "A case of bilateral postauricular sinuses". Korean Journal of Audiology. 16 (2): 99–101. doi:10.7874/kja.2012.16.2.99. PMC 3936561. PMID 24653881.
^Moore, K.L., Persaud, T.V.N., & Torchia, M.G. (2010). Development of eyes and ears. Before we are born, 17, 257-268.e1.
^MedlinePlus Genetics [Internet] (18 August 2020). "Branchiootorenal/branchiootic syndrome". MedlinePlus. Retrieved 16 March 2022.
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