Solitary Fibrous Tumor Arising from the Sphenoid Sinus

Figure 4

Histopathological features of the tumor. (a) the spindle cells are arranged in a patternless fashion in the collagenous matrix on hematoxylin-eosin staining ($\times$200). (b) the vast majority of the tumor cells were stained diffusely and strongly for CD34 ($\times$400). (c) cytoplasm in the numerous tumor cells expressed the Bcl-2 ($\times$400).

(a)

(b)

(c)