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Start free with EleplanMalignant triton tumor
ORPHA:252212Histopathological subtype
Also called MPNST with rhabdomyosarcomatous differentiation · MTT · Malignant peripheral nerve sheath tumor with rhabdomyosarcomatous differenciation
What it is
Malignant triton tumor (MTT) is a rare aggressive subtype of malignant peripheral nerve sheath tumor (MPNST) characterized histopathologically by focal rhabdomyoblastic differentiation.
Key facts
- Age of onset
- All ages
- Classified as
- Histopathological subtype
Recorded for the broader condition
- Prevalence
- 1-9 / 100 000 (annual incidence)Malignant peripheral nerve sheath tumor
- Inheritance
- Not applicableMalignant peripheral nerve sheath tumor
Orphanet records these for the broader condition rather than for this specific form. They are a starting point, not a figure for this subtype — subtypes often differ, and some are defined by being rarer than the condition they sit under.
Genes
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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