Congenital cartilaginous rest of the neck (CCRN) is a minor and very rare congenital cutaneous condition characterized by branchial arch remnants that are considered to be the cervical variant of accessory tragus.[2][3] It resembles a rudimentary pinna that in most cases is located in the lower anterior part of the neck.[3]
| Congenital cartilaginous rest of the neck | |
|---|---|
| Other names | Cervical accessory tragus, wattle, cervical tab, cervical auricle[1] |
 | |
| Drawing of a man with two cervical auricles (from the book "Evolution and disease", 1890, page 91) | |
| Specialty | Dermatology |
Diagnosis
editCCRN histopathology indicates the presence of elastic cartilage enclosed by various skin structures such as eccrine glands, adipose tissue, and pilosebaceous units.[4] To assess the extent of the lesion as well as look for any underlying sinus tracts, ultrasonography alongside computed tomography (CT) scans can be used.[5]
Alternative diagnoses for CCRN consist of thyroglossal duct cyst, hair follicle naevus, fibroepithelial polyp, and branchial cleft cyst.[6] Thyroglossal duct cysts are typically found in the midline of the neck, near the hyoid bone, and move with tongue protrusion or swallowing.[7] Hair follicle naevus appears as a single, skin-colored papule and can be associated with hypertrichosis.[8] Fibroepithelial polyps are soft, fleshy growths of collagen fibers and blood vessels that hang off the skin.[9] Branchial cleft cysts can manifest as cysts, fistulas, sinus tracts, or cartilaginous remnants on the front of the neck and upper chest.[5]
See also
editReferences
edit- ^ Definition of cervical auricle on MedGen. Retrieved 26 December 2017.
- ^ Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. ISBN 978-1-4160-2999-1.
- ^ a b Bireswar Bose (1982). "Cervical Auricle". Archives of Surgery. 117 (7): 968–9. doi:10.1001/archsurg.1982.01380310074018. PMID 7092550.
- ^ Rund, Chad R.; Galyon, Steven W.; Fischer, Edgar G. (1 December 2004). "Pathologic Quiz Case: An Anterior Neck Mass in a 5-Month-Old Female Infant". Archives of Pathology & Laboratory Medicine. 128 (12): 1453–1454. doi:10.5858/2004-128-1453-pqcaan. ISSN 1543-2165. PMID 15578897.
- ^ a b Dev, Prabin P.; Khullar, Geeti; Sharma, Shruti; Alex, Philip (8 September 2023). "Bilateral congenital cartilaginous rest of the neck: A rare presentation of accessory tragus". Indian Journal of Dermatology, Venereology and Leprology. Scientific Scholar: 1–2. doi:10.25259/ijdvl_517_2023. ISSN 0973-3922. PMID 38031701.
- ^ SEBBEN, JACK E. (1989). "The Accessory Tragus—No Ordinary Skin Tag". The Journal of Dermatologic Surgery and Oncology. 15 (3). Wiley: 304–307. doi:10.1111/j.1524-4725.1989.tb03164.x. ISSN 0148-0812. PMID 2646335.
- ^ Amos, Janine; Shermetaro, Carl (26 June 2023). "Thyroglossal Duct Cyst". StatPearls Publishing. PMID 30085599. Retrieved 18 November 2023.
- ^ Davis, Daniel A.; Cohen, Philip R. (4 March 1996). "Hair Follicle Nevus: Case Report and Review of the Literature". Pediatric Dermatology. 13 (2). Wiley: 135–138. doi:10.1111/j.1525-1470.1996.tb01420.x. ISSN 0736-8046. PMID 9122071. S2CID 44853108.
- ^ Banik, R.; Lubach, D. (1987). "Skin Tags: Localization and Frequencies According to Sex and Age". Dermatology. 174 (4). S. Karger AG: 180–183. doi:10.1159/000249169. ISSN 1018-8665. PMID 3582706.