Microscopic findings from a resected liver specimen. Tumor proliferation is evident adjacent to scar tissue (A) and has intersecting fascicles of atypical spindle-cells (B). The tumor was immunohistochemically positive for SMA (C), desmin (D) and h-caldesmon (E), and negative for c-KIT (F), CD34 (G) and S-100 (H). The blood vessel wall was positive for CD34 (G). A and B, H&E; C, SMA; D, desmin; E, h-caldesmon; F, C-kit; G, CD34; and H, S-100.