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

Figure 2

A small, round, blue cell, neuroectodermal tumor ((a), HE) showing a nodular architecture and a dense reticulin fiber network ((b), Gomori). Tumor cells showed nuclear expression of YAP1 (c) and cytoplasmic expression of GAB1 (d) while there was no nuclear expression of beta-catenin (e). Ki67-labelling reveals high proliferative activity (f).

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