J Korean Cleft Palate-Craniofac Assoc.  2007 Oct;8(2):94-96.

Retroauricular Dermoid Cyst

Affiliations
  • 1Department of Plastic and Reconstructive Surgery, Gachon University of Medicine and Science, Incheon, Korea. pseugene@gilhospital.com

Abstract

Dermoid cyst is a teratoma that contains developmentally mature skin, with hair follicles, sweat glands and so on. Dermoid cyst is painless oval or round shaped cystic mass that can make the bony depression after complete excision. Dermoid cyst is commonly found on lateral brow, nasofrontal area, subglottic area. But, we report two cases of dermoid cyst on retroauricular area. A 27 year-old male patient wanted to excise the retroauricular mass. Computed tomography showed that the mass looked like a dermoid cyst without connection to cranial cavity. So, we could completely excise the mass. The other 29 year-old male patient show the infected cystic mass on retroauricular area. We could completely excised the mass. After the excision of the mass, pathologist reported these are dermoid cysts. Retroauricular dermoid cysts have been rarely reported. But, we can suspect the retroauricular dermoid cyst originated in squamomastoid suture through the patient's history, physical and radiologic examination.

Keyword

Dermoid cyst; Ear
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