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Washington University Experience | NEOPLASMS (EMBRYONAL) | ETMR - Embryonal Tumor Multilayered Rosettes | 2B3 ETANTR (Case 2) H&E 6

2B3-6 The tumor is composed predominantly of true rosettes and canals that have central lumens bordered by terminal bars. The rosettes are thick and multi-layered and are separated from one another by cells having decreased density. Mitoses are easily identified, and the neoplasm also shows abundant karyorrhectic debris.

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