PMC5952560_01
Picture shows that spindle cell proliferation admixed with inflammatory cells (HE x40).
CRIPA2018-1612587.001.jpg
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fig1
Microscopy showed the tumor was composed of spindle and mildly polygonal cells arranged in short bundles (Figure 1).
Positive cytoplasmic staining with SMA in nodular fasciitis (SMA x40).
CRIPA2018-1612587.002.jpg
PMC5952560_01_CRIPA2018-1612587.002.jpg
fig2
Immunohistochemical examination showed that the tumor cells stained for smooth muscle actin (SMA) and vimentin while they did not stain for desmin, S100, and CD34 (Figure 2).