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*[[Myxoid lesions]]. | *[[Myxoid lesions]]. | ||
**Myxopapillary ependymoma. | **Myxopapillary ependymoma. | ||
**Myxoid liposarcoma - negative for EMA and cytokeratins. | **[[Myxoid liposarcoma]] - negative for EMA and cytokeratins. | ||
* | *Choroid lesions: | ||
**Choroid meningioma. | **[[Choroid meningioma]]. | ||
**Choroid glioma - location, location, location. | **Choroid glioma - location, location, location. | ||
**Large notochordal rest - only evidence of destructive growth can identify a chordoma. | **Large notochordal rest - only evidence of destructive growth can identify a chordoma. | ||
*Metastasis | *[[Metastasis]]: | ||
**Metastatic signet ring cell | **Metastatic [[signet ring cell carcinoma]] - negative for S100 and brachyury; clinical history (important). | ||
**Metastatic clear cell renal cell carcinoma - negative for S100 and brachyury ( | **Metastatic [[clear cell renal cell carcinoma]] - negative for S100 and brachyury; clinical history (important). | ||
*[[Parachordoma]] - extremely rare. | *[[Parachordoma]] - extremely rare. | ||
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