Wednesday 10 March 2004
Definition: Teratomas are neoplasms comprised of mixed elements derived from the three germ cell layers.
A teratoma is generally defined as a tumor arising from pluripotent cells, and it is precisely the heterogeneity of tissues present in such a tumor that best characterizes it; it is also commonly accepted that a teratoma must contain derivatives of more than one blastodermic layer, according
to traditional concepts of embryonic ontogenesis.
According to age
According to the localization
- cervical teratoma
- mediastinal teratoma
- pericardial teratoma
- retroperitoneal teratoma
- sacrococcygeal teratoma
mature ovarian teratoma (by Washington Deceit)
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- germ cell tumors (GCTs )