Catalog
Epidermoid cyst
Link to WHO Definition
Epidermoid cyst – http://id.who.int/icd/entity/1840564352
A cutaneous cyst with an epidermoid wall filled with keratin and its breakdown products. It most commonly forms as the result of squamous metaplasia in a damaged sebaceous gland but may result from trauma (traumatic inclusion cyst), especially when situated on the extremities. It typically presents as a spherical skin-coloured or yellowish nodule, often with a central pore opening onto the skin surface.