[Melanotic medulloblastoma. Ultrastructural and histochemical study of a case].


A electron microscopic and immunohistochemical study of a Melanotic medulloblastoma is reported. The cerebellar tumor was located in the vermis of a 6-year-old boy, dead 11 months after diagnosis. The tumor consisted of medulloblastoma-like areas with focal differentiation and pseudoepithelial structures pigmented with melanin. Electron microscopy showed… (More)


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