teratoma

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Words related to teratoma

a tumor consisting of a mixture of tissues not normally found at that site

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References in periodicals archive ?
Batra, "The pathogenesis of oral choristomas," Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology, vol.
Sheridan, "Osseous choristoma: a report of two gases," British Journal of Oral and Maxillofacial Surgery, vol.
Choristomas are believed to occur during development.
The exact pathogenesis of epibulbar osseous choristoma is controversial.
Cartilaginous Choristoma of the Tonsil: Three Case Reports.
Fitzgerald, "Osseous choristoma of the choroid," Archives of Ophthalmology, vol.
A choristoma is a mass consisting of normal tissue in a heterotopic location.
Foregut choristoma of the ileum, (adenomyoma)-a case report.
Key words: Ocular dermoid choristoma native Korean cattle.
Recently, Batt et al (25) redefined miillerianosis as "an organoid structure of embryonic origin; a choristoma composed of mUllerian rests--normal endometrium, normal endosalpinx, and normal endocervix--singly or in combination, incorporated within other normal organs during organogenesis." A choristoma is a mass of histologically normal tissue that is "not normally found in the organ or structure in which it is located." (25) Thus, according to Batt et al, (25) the pathogeneses of mUllerianosis and endometriosis are deeply different, as endometriosis is endometrium shed outside the uterine cavity that invades the outer surface of organs, whereas mUllerianosis is endometrium (and at times also endosalpinx and endocervix) misplaced within other organs during organogenesis.
If the differentiation is into various abnormally arranged pancreatic and glandular elements, terms like adenomyoma, myoepithelial hamartoma, adenomyosis and foregut choristoma are used.
Pulmonary choristoma, defined as an aggregation of histologically normal pulmonary tissue in an abnormal location has been reported in different animal species.
Other corneal shape defects include coloboma (a focal developmental defect); dermoid (choristoma of fat, hair, and sebaceous glands); and acute ectasia (central thinning of the cornea).
Other lesions that have a similar clinical presentation such as a lipoma, granular cell tumor, choristoma, leiomyoma, fibrous epithelial polyp, and benign mesenchymoma should likewise be considered.