Primitive Neuroectodermal Tumor
Section Editor: Dharam M. Ramnani, MD
Virginia Urology, Richmond, VA, USA
Image Description
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.