| Health / Medical Topics |
Mouse Pineoblastoma
Invasive embryonal neoplasm of the pineal gland showing neuronal differentiation histologically (Homer-Wright and/or Flexner-Wintersteiner rosette formation) by immunohistochemistry (synaptophysin, chromogranin, or NSE expression), or by electron microscopy (dense core vesicles and microtubules). (NCI Thesaurus/MMHCC)
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Variant of Ependymoma characterized by well formed papillae. Tumor cell processes abutting capillaries are usually GFAP-positive.
These are usually papillary or micropapillary, however, they may rarely be flat. True cribriforming, budding off of small clusters of epithelial cells…
These mucinous epithelial lesions may be flat or papillary. These lesions must have some nuclear abnormalities including some loss of polarity, nuclear…
These epithelial lesions have a papillary, micropapillary or basally pseudostratified architecture, but are otherwise identical to PanIN-1A.
Flat epithelial lesions composed of tall columnar cells with basally located nuclei and abundant supranuclear mucin. The nuclei are small and round…
