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Washington University Experience | VASCULAR | Intravascular Papillary Endothelial Hyperplasia (Masson Tumor) | 1E1 Intravascular Papillary Endothelial Hyperplasia (Case 1) 1 SMA WM
Whole mount stained for smooth muscle actin (SMA) shows concentration in the papillary and compact foci in the core element. (SMA IHC)
