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Fig. 1 | Surgical and Experimental Pathology

Fig. 1

From: Primary intra-axial Ewing sarcoma of the central nervous system: report of a rare case with literature review

Fig. 1

Diagnostic features of Ewing sarcoma. a The tumor was well demarcated from the surrounding brain tissue. The tumor cells formed trabecular islands and rosettes that were separated by fibrovascular tissues. b The tumor consisted of uniform, small-blue-round cells with scant cytoplasm and indistinct cytoplasmic membranes. Rosette formation is evident. c Immunohistochemically, CD99 showed diffuse membranous positivity. d- Fluorescence in situ hybridization showed EWSR1 gene rearrangement

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Surgical and Experimental Pathology

ISSN: 2520-8454

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