Fig. 3

Pathological findings. A. Hematoxylin–Eosin staining. There are spindle cells with eosinophilic sporangia and numerous large blood vessels with smooth muscle. Magnification: 100 × , scale bar: 200 µm. B. Hematoxylin–Eosin staining. Organized thrombi are seen. Magnification: 25 × , scale bar: 800 µm. C. CD31. Magnification: 100 × , scale bar: 200 µm. D. CD34. Magnification: 100 × , scale bar: 200 µm. E. α-SMA. Magnification: 100 × , scale bar: 200 µm. F. Desmin. Magnification: 100 × , scale bar: 200 µm. G. Caldesmon. Magnification: 100 × , scale bar: 200 µm. H. CD10. Magnification: 100 × , scale bar: 200 µm. I. HMB-45. Magnification: 100 × , scale bar: 200 µm. J. MIB-1. Magnification: 100 × , scale bar: 200 µm