Preauricular sinus and cyst
|Preauricular sinus and cyst|
|Classification and external resources|
A preauricular sinus (also known as a congenital auricular fistula, a congenital preauricular fistula, an ear pit:782, or a preauricular cyst) is a common congenital malformation characterized by a nodule, dent or dimple located anywhere adjacent to the external ear.
They are inherited features and usually appear on one side, but may be present on both sides in 25 to 50% of cases.
Preauricular sinuses and cysts result from developmental defects of the first and second branchial arches. This and other congenital ear malformations are sometimes associated with renal anomalies. In rare cases they may be associated with branchio-oto-renal syndrome.
Most preauricular sinuses are asymptomatic and remain untreated unless they become infected too often. Preauricular cysts are treated with surgery which, because of their close proximity to the facial nerve, is performed by experienced surgeon, such as an otolaryngologist (a head and neck specialist).
- Freedberg, et al. (2003). Fitzpatrick's Dermatology in General Medicine. (6th ed.). McGraw-Hill. ISBN 0-07-138076-0.
- Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. ISBN 1-4160-2999-0.
- Noah S Scheinfeld; Valerie Nozad (Mar 18, 2008). "Preauricular Sinuses". Retrieved 24 Feb 2009.
- From Stedman's Medical Spellchecker cited in WrongDiagnosis.com (2006). "Preauricular Sinus". Retrieved 24 Feb 2009.
- Raymond Y. Wang, Dawn L. Earl, Robert O. Ruder, John M. Graham Jr. "Syndromic Ear Anomalies and Renal Ultrasounds".
- James, William D.; Berger, Timothy G.; et al. (2006). Andrews' Diseases of the Skin: Clinical Dermatology. Saunders Elsevier. ISBN 0-7216-2921-0.
- Stephen Ludwig, Stephan Strobel, Stephen D. Marks, Pete K. Smith, Ph.D., Magdi H. El Habbal, M.D., Lewis Spitz Visual Handbook of Pediatrics and Child Health Published by Lippincott Williams & Wilkins, 2008; page 517. ISBN 0-7817-9505-2
- Michael Hawke Ear Disease Published by PMPH-USA, 2003; page 5. ISBN 1-55009-241-3
- The preauricular sinus: A review of its aetiology, clinical presentation and management International Journal of Pediatric Otorhinolaryngology (2005) 69, 1469—1474
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