Diffuse positive immunoreaction with antibodies against SMA (A) and focal positive Ki-67 immunoreaction (B) are observed in the spindle cells. No immunoreaction was observed for CD31 (C) and CD34 (D) in neoplastic cells (ABC-DAB; A. ×200; B, C, ×400; D, ×200).
Kandemir et al. Diagnostic Pathology 2010 5:12 doi:10.1186/1746-1596-5-12