Teratoma (also known as Teratomas, Dysembryoma): A true neoplasm composed of a number of different types of tissue, none of which is native to the area in which it occurs. It is composed of tissues that are derived from three germinal layers, the endoderm, mesoderm, and ectoderm. They are classified histologically as m

NIH MeSH · D013724Diseases

Teratoma

Also known asTeratomas · Dysembryoma · Dysembryomas · Teratoid Tumor · Teratoid Tumors · Tumors, Teratoid · Tumor, Teratoid · Teratoma, Benign · Benign Teratoma · Benign Teratomas · Teratomas, Benign · Teratoma, Cystic

Definition

A true neoplasm composed of a number of different types of tissue, none of which is native to the area in which it occurs. It is composed of tissues that are derived from three germinal layers, the endoderm, mesoderm, and ectoderm. They are classified histologically as mature (benign) or immature (malignant). (From DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1642)

MeSH classification

  • C04.557.465.910

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Related concepts

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Common questions about Teratoma

What does Teratoma mean in medicine?
A true neoplasm composed of a number of different types of tissue, none of which is native to the area in which it occurs. It is composed of tissues that are derived from three germinal layers, the endoderm, mesoderm, and ectoderm. They are classified histologically as mature (benign) or immature (malignant). (From DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1642) This definition is taken from the National Library of Medicine's MeSH (Medical Subject Headings) 2026 release, which is the standard vocabulary used to index PubMed and most medical literature.
Is Teratoma known by any other names?
Yes. Teratoma is also referred to as Teratomas, Dysembryoma, Dysembryomas, Teratoid Tumor in different clinical, research and patient-facing contexts. The MeSH descriptor groups all of these synonyms under a single canonical concept so research and records stay consistent.
Where does Teratoma sit in the medical classification?
Teratoma falls under the broader medical category "Diseases" in the MeSH hierarchy (tree numbers: C04.557.465.910). Browsing the related concepts on this page takes you to neighbouring topics in the same branch of medicine.
Where can I get a plain-language explanation of Teratoma?
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Source: NIH MeSH 2026 (D013724) — National Library of Medicine, public domain. View official MeSH record ↗