Dermoids are a dermatological disorder of cattle characterised by a cyst (teratoma) that contains within it developmentally mature skin.
In cattle, dermoids are usually associated with important structures such as the eye, nasolacrimal ducts or other vital organs, but can be found in aberrant locations such as the ventral neck and in internal organs such as the ovary. Dermoids usually appear on the face or nasolabial planum as swellings that are usually non-pruritic.
In valuable cattle, surgical excision is usually curative.
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