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Selected immunophenotypical features: nuclear positivity for paired box gene 2 (PAX2) (A), strongapical free surface membranous positivity for CD10 (B) and epithelial membrane antigen (EMA) (C). von Hippel-Lindau (VHL)40 (D) delineates epithelial membranes. Marked subepithelial vascularity is highlighted by both CD31 (E) and by positivity of Wilms’ tumour suppressor gene (WT-1) in both capillary nuclei and cytoplasms (F).
