TP53 and neoplasm: Immunohistochemistry analysis showed positive ATRX nuclear stain and negative P53 expression (Figures 1G, I), consistent with the genomic analysis showed wild-type ATRX and TP53. Scattered CD34 expression was seen in tumor cells in addition to vascular endothelial cells (Figure 1H), which was consistent with a previous report showing frequent CD34 expression in mixed or diffuse DNT (18).