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Washington University Experience | NEOPLASMS (GLIAL) | Glioblastoma, small cell type | 1B4 GBM, small cell features, focal (Case 1) FISH EGFR Amp

There was marked amplification of the EGFR signal. These changes confirm the presence of a "small cell" astrocytic line component within this tumor and, thus, its diagnosis as glioblastoma with small cell features.

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