CD34 and neoplasm: Immunohistochemically (Fig. 4, C–E), this tumor tested positive for CD34, STAT-6, cytokeratin (focality), epithelial membrane antigen (focality), and Ki-67 (20%) and negative for Desmin, Dog1, S-100, TLE-1, β-catenin (β-c), CD21, CD35, CD23, and CD117.[4] In addition, fluorescence in situ hybridization also did not detect SSX/SS18 gene ectopic (Fig. 4, B).