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Primitive Neuroectodermal Tumor

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Vascular invasion is commonly seen in primitive neuroectodermal tumor. They are usually immunoreactive for CD99 (membranous pattern), and FLI-1 (nuclear staining) and are negative for WT1. Am J Surg Pathol 2002 March; 26(3):320-7.

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slide 17 of 17