Ovary, dermoid cyst of the
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 simply dermoids or ovarian teratomas.

Medical dictionary. 2011.

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  • Dermoid cyst of the ovary — 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… …   Medical dictionary

  • Dermoid cyst — Classification and external resources A 7x4 cm mature cystic teratoma extracted from a left ovary showing mature teeth, skin and hair ICD 10 K …   Wikipedia

  • dermoid cyst — n a cystic tumor often of the ovary that contains skin and skin derivatives (as hair or teeth) called also dermoid * * * (dermoid) a cyst containing hair, hair follicles, and sebaceous gland, usually found at sites marking the fusion of… …   Medical dictionary

  • dermoid cyst — noun Date: 1872 a cystic tumor often of the ovary that contains skin and skin derivatives (as hair or teeth) called also dermoid …   New Collegiate Dictionary

  • Dermoid — 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… …   Medical dictionary

  • Cyst — This article is about cysts in the body. For the ICAO airport code CYST, see St. Theresa Point Airport. For hard shelled resting stages of some small organisms, see Microbial cyst. Cyst Classification and external resources …   Wikipedia

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  • Cyst, ovarian — A fluid filled sac in the ovary. The most common type of ovarian cyst is called a follicular cyst. It results from the growth of a follicle. A follicle is the fluid filled cyst that contains an egg. In some cycles, this follicle grows larger that …   Medical dictionary

  • Ovarian cyst — A fluid filled sac in the ovary. The most common type of ovarian cyst is called a follicular cyst. It results from the growth of a follicle. A follicle is the fluid filled cyst that contains an egg. In some cycles, this follicle grows larger that …   Medical dictionary

  • Ovarian cyst — Classification and external resources Ovarian cyst ICD 10 N83.0 N …   Wikipedia

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