PMC3420426_01
Histological features of low-grade prostatic sarcoma. Diffuse proliferation of epithelioid cells ((a) (10 XHPF) and (b) (40 XHPF)) and spindle cells, with a storiform and infiltrative growth pattern ((c) (20 XHPF) and (d) (40 XHPF)).
CRIM.PATHOLOGY2011-252805.001.jpg
PMC3420426_01_CRIM.PATHOLOGY2011-252805.001.jpg
fig1
There are not prostatic glands in the proliferation, no foci of necrosis, no vascular invasion. The neoplastic cells showed rare atypical mitotic figures in addition to moderate hypercellularity and moderate nuclear atypia with pleomorphism (Figure 1).
Immunohistochemical expression of CD34 and Ki67. Ki-67 showed a very low expression ((a) (20 XHPF) and (b) (40 XHPF)). The neoplastic cells express diffusely CD34 immunoreactivity ((c) (20 XHPF) and (d) (40 XHPF)).
CRIM.PATHOLOGY2011-252805.002.jpg
PMC3420426_01_CRIM.PATHOLOGY2011-252805.002.jpg
fig2