Cerebellar Medulloblastoma in Middle-to-Late Adulthood

Figure 2

(a) H&E stain illustrating the primitive cells and the peculiar angiocentric pattern of distribution. (b) Immunohistochemical stain with CD45 (LCA) showed absence of immunoreactivity excluding lymphoma. (c) Pancytokeratin immunohistochemical stain was nonimmunoreactive excluding a metastatic carcinoma. ((d) and (e)) CD56 and CD99 immunohistochemical stains showed strong membranous pattern of immunoreactivity of the tumor cells. (f) Synaptophysin showed weak immunoreactivity.

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