Never Too Old? Occurrence of Medulloblastoma in the Elderly beyond the 70th Year of Life

Figure 4

A small, round, blue cell, neuroectodermal tumor ((a), HE) without nodular architecture and without reticulin fiber network ((b), Gomori). Tumor cells showed expression of synaptophysin (c) but no expression of YAP1 and GAB1 (d). There was no nuclear expression of beta-catenin (e). Ki67-labelling reveals high proliferative activity (f).

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