dermatoid

1. skinlike.
2. a dermoid cyst.

• d. cyst — a tumor of developmental origin consisting of a fibrous wall lined with stratified epithelium and containing hair follicles, sweat glands, sebaceous glands, nerve elements and teeth; a teratoma. Occurs in subcutaneous sites, in the ovary and various locations in the eye, including cornea, conjunctiva and eyelids.
• ocular d. — dermoid on the eyelid, cornea or conjunctiva.
• ovarian d. — when these cysts occur in the ovary they may present no signs but their long pedicles may cause twisting, resulting in acute abdominal pain.
• d. sinus — an inherited abnormality in Rhodesian Ridgeback dogs in which a neural tube, which is an invagination of the skin, connects the skin with the dura mater in the vertebral canal or to an intervening structure. Characterized by the presence of a tuft of hair protruding from each sinus and sometimes complicated by infection with drainage.