Embryonal tumour with multilayered rosettes: Difference between revisions
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* Rarely cysts, calcifications. | * Rarely cysts, calcifications. | ||
* Widespread infiltration. | * Widespread infiltration. | ||
==Microscopy== | |||
* Rosettes (often multilayered). | |||
* Small cells. | |||
* Fibrillar zones (neuropil-like areas). | |||
* Neoplastic ganglion cells. | |||
* Papillar and tubular growth (primitive neural tubes). | |||
**PAS-positive membranes. | |||
* Glial maturation after treatment (rare). | |||
==IHC== | ==IHC== | ||