Preauricular sinus and cyst
| Preauricular sinus and cyst | |
| Classification and external resources | |
| File:Preauricularsinus.jpg | |
|---|---|
| ICD-10 | Q18.1 |
| ICD-9 | 744.4 |
| DiseasesDB | 34576 |
| MedlinePlus | 003304 |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Kiran Singh, M.D. [2]
Overview
A preauricular sinus or cyst (also known as a "Congenital auricular fistula," "Congenital preauricular fistula," "Ear pit"[1]:782, and "Preauricular cyst"[2] ) is a common congenital malformation characterized by a nodule, dent or dimple located anywhere adjacent to the external ear.[3] They are inherited features and usually appear on one side, but may be bilateral in 25-50% of cases. Preauricular sinuses and cysts result from developmental defects of the first and second branchial arches.[4] Occasionally a preauricular sinus or a cyst can become infected.[5] This and other congenital ear malformations are associated with renal anomalies.[6]
Most preauricular sinuses are asymptomatic and remain untreated unless they become infected too often.[7] Preauricular cysts are treated with surgery which, because of their close proximity to the facial nerve should be left to an experienced surgeon, such as an otolaryngologist - head and neck surgeon.[8]
In rare cases they may be associated with branchio-oto-renal syndrome.
Diagnosis
Physical Examination
Skin
Ear
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![Congenital auricular fistula. Adapted from Dermatology Atlas.[9]](/images/c/c8/Congenital_auricular_fistula01.jpg)
Congenital auricular fistula. Adapted from Dermatology Atlas.[9] -
![Congenital auricular fistula. Adapted from Dermatology Atlas.[9]](/images/7/72/Congenital_auricular_fistula02.jpg)
Congenital auricular fistula. Adapted from Dermatology Atlas.[9]
![Congenital auricular fistula. Adapted from Dermatology Atlas.[9]](/index.php/File:Congenital_auricular_fistula01.jpg)
![Congenital auricular fistula. Adapted from Dermatology Atlas.[9]](/index.php/File:Congenital_auricular_fistula02.jpg)
See also
References
- ↑ 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 cyted in WrongDiagnosis.com (2006). "Preauricular Sinus". Retrieved 24 Feb 2009.
- ↑ James, William D.; Berger, Timothy G.; et al. (2006). Andrews' Diseases of the Skin: Clinical Dermatology. Saunders Elsevier. ISBN 0-7216-2921-0.
- ↑ Raymond Y. Wang, MD*, Dawn L. Earl, RN, CPNP‡, Robert O. Ruder, MD§, John M. Graham Jr, MD, ScD. "Syndromic Ear Anomalies and Renal Ultrasounds".
- ↑ 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
- ↑ 9.0 9.1 "Dermatology Atlas".
External links
- The preauricular sinus: A review of its aetiology, clinical presentation and management International Journal of Pediatric Otorhinolaryngology (2005) 69, 1469—1474
Template:Congenital malformations and deformations of face and neck