PMC5259938_01
(a) Papillary structures with fibrovascular cores composed of highly atypical, pleomorphic, multi, and mononuclear cells (H&E, x40). (b) Some of the tumor cells formed rosette-like arrays (H&E, x400). (c) Some cell clusters exhibited eosinophilic globule-like material (H&E, x400). (d) Cohesive sheets and prominent perivascular pseudorosette formations of giant cells with irregular hyperchromatic nuclei dispersed between medium to small-sized cells (H&E, x100)
JCytol-34-63-g001.jpg
PMC5259938_01_JCytol-34-63-g001.jpg
F1
Cohesive papillary structures with fibrovascular cores and sheets with irregular borders were observed [Figure 1a]. Some of the cells formed rosette-like arrays [Figure 1b], and some cell clusters exhibited eosinophilic globule-like material [Figure 1c]. Eosinophilic intranuclear inclusions and perivascular pseudorosette formations were observed [Figure 1d]. Mitotic figures were 0-1/10 high-power field.