Also called a dermoid cyst of the ovary, this is a bizarre tumor, usually benign, in the ovary that typically contains a diversity of tissues including hair, teeth, bone, thyroid, etc. A dermoid cyst develops from a totipotential germ cell (a primary oocyte) that is retained within the egg sac (ovary). Being totipotential, that cell can give rise to all orders of cells necessary to form mature tissues and often recognizable structures such as hair, bone and sebaceous (oily) material, neural tissue and teeth. Dermoid cysts may occur at any age but the prime age of detection is in the childbearing years. The average age is 30. Up to 15% of women with ovarian teratomas have them in both ovaries. Dermoid cysts can range in size from a centimeter (less than a half inch) up to 45 cm (about 17 inches) in diameter. These cysts can cause the ovary to twist (torsion) and imperil its blood supply. The larger the dermoid cyst, the greater the risk of rupture with spillage of the greasy contents which can create problems with adhesions, pain etc. Although the large majority (about 98%) of these tumors are benign, the remaining fraction (about 2%) becomes cancerous (malignant). Removal of the dermoid cyst is usually the treatment of choice. This can be done by laparotomy (open surgery) or laparoscopy (with a scope). Torsion (twisting) of the ovary by the cyst is an emergency and calls for urgent surgery. Dermoid cysts of the ovary are also called ovarian teratomas.
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1. SYN: dermatoid (1). 2. SYN: d. cyst. [dermo- + G. eidos, resemblance]
- inclusion d. SYN: epidermal cyst.

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der·moid 'dər-.mȯid also der·moi·dal (.)dər-'mȯid-əl adj
1) made up of cutaneous elements and esp. ectodermal derivatives <a \dermoid tumor>
2) resembling skin

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der·moid (durґmoid) [derm- + -oid] 1. resembling skin. 2. dermoid cyst.

Medical dictionary. 2011.

Look at other dictionaries:

  • dermoid — dermoíd adj. m., pl. dermoízi; f. sg. dermoídă, pl. dermoíde Trimis de siveco, 10.08.2004. Sursa: Dicţionar ortografic  DERMOÍD, Ă adj. Asemănător cu pielea. [pron. mo id. / < …   Dicționar Român

  • Dermoid — Der moid, a. [Derm + oid: cf. F. dermo[ i]de.] Same as {Dermatoid}. [1913 Webster] {Dermoid cyst} (Med.), a cyst containing skin, or structures connected with skin, such as hair. [1913 Webster] …   The Collaborative International Dictionary of English

  • Dermoīd — Dermoīd, krankhafte Entwickelung eines Gewebes als Auskleidung von Cystenwänden od. auf Schleimhäuten aus Bindegewebe mit Epidermisüberzüge bestehend, in welchem Haarbälge mit Haaren, Talg u. Schweißdrüsen eingebettet sind …   Pierer's Universal-Lexikon

  • Dermoīd — (Dermoidcyste), s. Balggeschwulst und Eierstock …   Meyers Großes Konversations-Lexikon

  • Dermoid — Dermoīd, Dermoidzyste, eine Art Balggeschwulst, bes. im Eierstock …   Kleines Konversations-Lexikon

  • Dermoid —   das, s/ e, in der Fetalentwicklung entstandene Hautfehlbildung (Epithelversprengung), meist in Form einer Zyste (Dermoidzyste), die von mehrschichtigem Plattenepithel ausgekleidet ist und als echtes Teratom auch Hautanhangsgebilde enthält;… …   Universal-Lexikon

  • dermoid — dermòīd m <G dermoída> DEFINICIJA umjetna koža ETIMOLOGIJA derm + oid …   Hrvatski jezični portal

  • dermoid — cyst …   The new mediacal dictionary

  • dermoid — [dʉr′moid΄] adj. [ DERMO + OID] 1. consisting of tissues of ectodermal origin, such as skin, hair, and teeth, as found in certain benign, congenital tumors 2. skinlike …   English World dictionary

  • dermoid — noun see dermoid cyst …   New Collegiate Dictionary

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