Fig. 2

a A case of HSH showed proliferated, focally obliterated blood vessels surrounded by dense sclerotic stroma (H&E 100×). b Higher power view (H&E 200×). c Area of cavernous hemangioma (H&E 200×). d Dense sclerotic stroma (MT 100×). e Vascular spaces were positive for CD34 (IHC 200×). f Smooth muscle proliferation was positive for SMA (IHC 200×). g Endothelial cells and fibroblasts were negative for VEGF (IHC 200×). h Degenerated masts cells were positive for C-Kit (IHC 200×)