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Washington University Experience | VASCULAR | Intravascular Papillary Endothelial Hyperplasia (Masson Tumor) | 1B1 Intravascular Papillary Endothelial Hyperplasia (Case 1) NEG 6
1B1-3 An immunochemical negative image shows the compact prominent solid papillarity and bland appearance of the endothelial cells (Negative control IHC).
