Malignant Teratoma
Alternate Names : Dermoid Cyst - Malignant, Immature Teratoma, Nonseminomatous Germ Cell Tumor - Teratoma
DefinitionMalignant teratoma is a type of cancer consisting of cysts that contain one or more of the three main types of cells present in embryos -- ectoderm, mesoderm, and endoderm cells.
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Overview, Causes, & Risk Factors
Malignant teratoma occurs most often in young men in their 20's - 30's. It is often located in the anterior mediastinum (in the chest). Most malignant teratomas have spread (metastasized) by the time of diagnosis and they can spread throughout the body.
A number of other cancers are often associated with these tumors including:
- Acute myelogenous leukemia (AML)
- Myelodysplasia (MDS)
- Malignant histiocytosis
- Embryonal rhabdomyosarcoma
- Small cell undifferentiated carcinoma
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