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==General== | ==General== | ||
*Location: usually sacrum or clivus. | *Location: usually sacrum or clivus. | ||
*It is a [[bone tumour]]. | *It is a malignant [[bone tumour]] (1-4% of all primary bone tumors). | ||
*Usually after age 30. | |||
*Comes in three flavours: | |||
**Chordoma, NOS (ICD-O: 9370/3) | |||
** Chondroid chordoma (ICD-O: 9371/3) | |||
** Dedifferentiated chordoma (ICD-O: 9372/3) | |||
==Gross== | ==Gross== |