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teratomas

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.

Microscopical types

- mature teratoma

  • ovarian dermoid cysts
    - immature teratoma

According to age

- fetal teratoma
- neonatal teratoma

According to the localization

- gonadal teratoma

  • ovarian teratoma
  • testicular teratoma

- extragonadal teratoma

  • cervical teratoma
  • mediastinal teratoma
  • pericardial teratoma
  • retroperitoneal teratomas
  • sacrococcygeal teratoma

Variants

Videos

- mature ovarian teratoma (by Washington Deceit)

< object width="425" height="350"> < param name="movie" value="http://www.youtube.com/v/Nj2WJ_Ryi50"> < /param> < param name="wmode" value="transparent"> < /param> < embed src="http://www.youtube.com/v/Nj2WJ_Ryi50" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"> < /embed> < /object>

See also

- Tumors

Portfolio

  • Testicular dermoid cyst
  • Testicular dermoid cyst
  • Sacrococcygeal teratoma (Macroscopy)
  • Sacrococcygeal teratoma (Macroscopy)
  • Sacrococcygeal teratoma (Macroscopy)
  • Sacrococcygeal teratoma (Macroscopy)
  • Sacrococcygeal teratoma (Macroscopy)
  • Ovarian mature teratoma (dermoid cyst)
  • Ovarian mature teratoma (dermoid cyst)
  • Thyroid teratoma
  • Thyroid teratoma
  • Thyroid teratoma
  • Ovarian mature teratoma
  • Sarcoma in mediastinal teratoma
  • Sarcoma in mediastinal teratoma
  • Sarcoma in mediastinal teratoma
  • Intra-abdominal immature teratoma
  • Intra-abdominal immature teratoma
  • Intra-abdominal immature teratoma
  • Intra-abdominal immature teratoma
  • Intra-abdominal immature teratoma
  • Congenital sacrococcygeal immature teratoma
  • Congenital sacrococcygeal immature teratoma
  • Congenital sacrococcygeal immature teratoma
  • Congenital sacrococcygeal immature teratoma