- Dermoid cysts arise from nests of epidermal cells that have been sequestered in the dermis during development or implanted as a result of trauma
- Congenital dermoid cysts are found at the sites of embryonic fusion, commonly at the mid-line of the body
- They are Firm tense cyst.
- lined by squamous epithelium and contain sebum, degenerate cells and, in some cases, hair.