Figure 3.

Immunohistochemical stains. Diffuse CD31 positivity (A) indicates the vascular nature of the tumor cells. Diffuse immunoreactivity for cytokeratin stain (B) could be a diagnostic pitfall. (×400 [A] and ×200 [B]).

Kao et al. Diagnostic Pathology 2011 6:130   doi:10.1186/1746-1596-6-130
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