dermoid cyst

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dermoid cyst

[¦dər‚mȯid ′sist]
(medicine)
A benign cystic teratoma with skin, skin appendages, and their products as the most prominent components, usually involving the ovary or the skin.
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Mature teratomas are often asymptomatic and rarely invade the pericardium.
with a mature teratoma brain tumor to undergo this pioneering laser procedure since the Visualase laser system was approved for non-experimental use in the United States in 2007.
In a study comprising of 126 patients, recurrence of tumor was seen in 11% of cases with mature teratoma during the five year follow-up.
Although the size of the carcinoid tumour was larger than that of the mature teratoma in our case, the origin of the testicular carcinoid tumour is postulated to be a one-sided development of the mature teratoma or differentiation of toti-potential germ cells in the testis to argentaffin-like cells.
Approximately 43% of all mediastinal GCTs contain teratoma and include mature teratoma (63%), immature teratoma (4%), and teratoma with other malignant components (ie, sarcoma, other malignant germ cell element, or carcinoma) (33%).
A histopathologic diagnosis of a mature teratoma was made.
15) Embryonal carcinoma, the most undifferentiated, showed the highest level of expression of telomerase RNA, whereas telomerase expression was decreased in mature teratoma.
Histology of residual masses after first-line chemotherapy will be necrosis in 40% to 50%, mature teratoma in 35% to 40% and viable cancer in 10% to 15%.
Complex adnexal masses greater than 5 cm are most likely mature teratomas (Am.
Mature teratomas do not show elevation of tumour markers, while AFP elevation is diagnostic of a nonseminomatous GCT.