FIGURE 3 | Modern Pathology

FIGURE 3

From: Primary Peripheral PNET/Ewing's Sarcoma of the Dura: a Clinicopathologic Entity Distinct from Central PNET

FIGURE 3

Case 2: low power microscopic view, showing sheets of monotonous small round cells (A). High power microscopic view, highlighting an area of necrosis and several mitotic figures (B). The tumor cells display a diffuse, strong, membrane expression of CD99 (C). FISH with EWS centromere/EWS telomere probe set of Case 2. Split signals indicate EWS region rearrangement (D).

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